Glass joint adapters: clear and amber glass drop-downs with frosted-joint reducers and converters on a white and blue set

Glass Joint Adapters: Reducers, Drop-Downs & Converters

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      Curated by the Angies Boutique buyers. Reducers, drop-downs, dome sets and Proxy adapters for matching any banger, bowl or dome to the rig you already own.


      Glass Joint Adapters: Reducers, Drop-Downs & Converters for 10mm, 14mm and 18mm Joints

      A glass joint adapter is a short piece of glass that connects two pieces that would not otherwise fit together: a different joint size, a different gender (male or female), or a different angle. Adapters let you run a 14mm banger on an 18mm rig, drop a nail lower on a short piece, put a dome-and-nail setup on a modern rig, or connect a Puffco Proxy to a water pipe. Angies Boutique carries Boro Syndicate Low Rider drop-downs, GRAV reducers, dome-and-adapter sets from Boro Syndicate and Ski Mask, and Proxy adapters from MJ Arsenal.

      • What adapters fix: joint size, joint gender, joint angle, and height
      • Joint sizes: 10mm, 14mm and 18mm (GRAV labels its larger joint 19mm)
      • Types we carry: reducers, drop-downs, dome-and-adapter sets, Puffco Proxy adapters
      • Brands: Boro Syndicate, GRAV, Ski Mask Glass, MJ Arsenal
      • Material: borosilicate glass with ground (frosted) joints
      • Before you buy: know your rig's joint size and gender; the three-step check is below

      How do I pick the right glass joint adapter?

      Every adapter is described by two ends: the end that goes into your rig and the end that accepts your banger, bowl or dome. Get three things right and it will fit.

      1. Size. Measure the joint opening on your rig. Most modern rigs and bongs are 14mm; older and larger pieces are often 18mm; mini rigs are often 10mm. GRAV calls its large joint 19mm, and it mates with standard 18mm pieces.
      2. Gender. A female joint is the opening that something slides into; a male joint slides into it. The adapter end that meets your rig must be the opposite gender of your rig's joint.
      3. Angle. A rig with a 90° joint points straight out sideways and takes 90° bangers; a 45° joint angles upward and takes 45° bangers. The angle of your banger must match the angle of the joint it sits in.

      Not sure what you have? Call the shop at (213) 680-0080 or send a photo of the joint and we will help identify it.


      What types of glass joint adapters are there?

      Reducers and expanders

      A reducer steps a larger joint down to a smaller one, which is the most common need because most bangers and bowls sold today are 14mm while many older rigs are 18mm. An expander goes the other way. The GRAV 19mm Female to 14mm Female Reduction Adapter slides onto a 19mm male joint and accepts any 14mm male bowl or banger.

      Drop-downs

      A drop-down lowers your banger below the rig's joint. That keeps the hot quartz away from the glass, puts the banger at a better height on tall or short rigs, and lets reclaim drain into the drop-down instead of the rig. Many drop-downs also change size or gender at the same time. Boro Syndicate's Low Rider drop-downs come in combinations like 18mm male to 18mm male and 18mm male to 14mm female, plus colored versions like the Amber 14mm male to 14mm male.

      Dome-and-adapter sets

      Dome-and-nail dabbing needs a female joint on the rig side and a dome sized to the nail. Dome sets bundle the dome with the matching adapter so the whole assembly fits your rig. The Boro Syndicate 18mm Dome & Adapter Set in Opal includes an 18mm dome, an 18mm male-to-male adapter and an 18mm quartz nail, and the Rainbow Wig Wag set adapts an 18mm dome to a 14mm female rig. Ski Mask Glass makes 14mm thermo dome sets like the Time Bomb, each with a 14mm male-to-male adapter. More domes are in Vapor Domes.

      Puffco Proxy adapters

      The Puffco Proxy uses its own connection, not a standard joint. A Proxy adapter turns that connection into a standard male joint so the Proxy can run through a water pipe. The MJ Arsenal Proxy Attachment connects the Proxy to MJ Arsenal and standard glass water pipes. For Proxy glass, bubblers and Core attachments, see Puffco Proxy Glass & Adapters.

      Every adapter in stock is pictured in the grid below. Drop-downs and dome sets sell one or two at a time, so check back or call if the combination you need is sold out.


      Which adapter do I need for my setup?

      You have You want to use You need
      18mm female rig 14mm male banger or bowl An 18mm male to 14mm female drop-down or reducer
      14mm female rig 14mm male banger, sitting lower A 14mm male to 14mm female drop-down
      Piece with a 19mm male joint 14mm male bowl or banger The GRAV 19mm female to 14mm female adapter
      14mm female rig An 18mm dome and nail A dome-and-adapter set that adapts 18mm to 14mm
      Female joint on both rig and accessory To connect them A male-to-male adapter of the right size
      Puffco Proxy A water pipe A Proxy adapter such as the MJ Arsenal Proxy Attachment

      What should I know before buying a glass joint adapter?

      Every adapter adds height and a little drag. The rig sits taller and draws slightly harder; on percolator-heavy rigs, keep the setup as short as possible. Mind the balance. A drop-down plus a heavy quartz banger puts weight off to the side, so small rigs can tip; keep them on a flat, stable surface. Heat stays on the quartz. Torch only the banger or nail, never the glass adapter. Keep joints clean. Reclaim on a frosted joint makes it stick; wipe joints with isopropyl and never force a stuck joint, warm it gently instead. Proxy adapters are device-specific and do not work as general joint adapters. Sold to adults 21+.


      What else should I look at?

      Pair your adapter with the piece it connects: Quartz Bangers & Nails, Vapor Domes, Bowls & Slides, Ash Catchers and Downstems. For the rigs themselves, see Dab Rigs and Bongs. Finish the setup with Carb Caps.


      Angies Boutique · 838 N Broadway, Los Angeles, CA 90012 · (213) 680-0080 · Open daily 11am to 7pm PST · Established 1990 · Call or send a photo for help identifying your joint · Same-day in-store pickup and same-day delivery in Los Angeles · Ships to all 50 states and worldwide · 21+ only.

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      Frequently Asked Questions about Glass Joint Adapters: Reducers, Drop-Downs & Converters

      A glass joint adapter is a short piece of glass that connects two pieces that would not otherwise fit: a different joint size, a different gender, or a different angle. Adapters let you run a 14mm banger on an 18mm rig, lower a banger with a drop-down, put a dome and nail on a modern rig, or connect a Puffco Proxy to a water pipe.
      Measure the opening of the joint. Most modern rigs and bongs use 14mm joints, older and larger pieces often use 18mm, and mini rigs often use 10mm. GRAV labels its larger joint 19mm, which mates with standard 18mm pieces. If you are unsure, call Angies Boutique at (213) 680-0080 or send a photo of the joint and the shop will help identify it.
      A female joint is the opening that another piece slides into. A male joint is the end that slides into a female joint. The adapter end that connects to your rig must be the opposite gender of the rig's joint: a female rig joint takes a male adapter end, and a male rig joint takes a female adapter end.
      A reducer steps a larger joint down to a smaller one. The most common use is running a modern 14mm banger or bowl on an older 18mm female rig, which needs an 18mm male to 14mm female reducer or drop-down: the 18mm male end goes into the rig and the 14mm female end accepts the banger. An expander does the opposite, stepping a smaller joint up to a larger one.
      A drop-down lowers the banger below the rig's joint. That keeps hot quartz away from the rig's glass, sets the banger at a more comfortable height, and lets reclaim collect in the drop-down instead of the rig. Many drop-downs also change joint size or gender at the same time, like a Boro Syndicate Low Rider in 18mm male to 14mm female.
      Match the angle to the joint. A 90 degree joint points straight out to the side and takes 90 degree bangers and adapters. A 45 degree joint angles upward and takes 45 degree pieces. Using the wrong angle tilts the banger, so concentrate pools unevenly and the setup is less stable.
      The Puffco Proxy uses its own connection rather than a standard glass joint, so it needs a Proxy adapter that converts it to a standard male joint. The MJ Arsenal Proxy Attachment connects the Proxy to MJ Arsenal and standard glass water pipes. Proxy adapters only work with the Proxy and are not general joint adapters.
      Slightly. Each adapter adds height and a small amount of drag, and a drop-down with a heavy banger shifts weight to the side of the rig. On percolator-heavy rigs, keep the setup as short as possible, and keep small rigs on a flat, stable surface. Torch only the banger or nail, never the glass adapter.
      Angies Boutique at 838 N Broadway, Los Angeles, CA 90012 carries Boro Syndicate drop-downs, GRAV reducers, dome-and-adapter sets and Puffco Proxy adapters. Open daily 11am to 7pm PST, call (213) 680-0080. Order online for same-day in-store pickup or same-day delivery in Los Angeles, or shipping to all 50 states and worldwide. 21+ only.