Wholesale Grav Labs Steel Clamps(10 pk) Keep It Tight These Steel Joint Clips are the best way to keep bowls, downstems, and Stax parts from separating. The steel clips are bendable so you can ensure a snug fit. No more worrying broken downstems or your freshly packed bowl falling out! Lock together every section in your Stax build Custom shaped to ensure a snug fit Available in 14mm, 19mm or 34mm Pack of 10