The 1400GL replacement glide is meant to be used to replace worn glides on Richardson Seating's 1400 series bar stools. Replacing worn glides is the most affordable and quickest way to restore or extend your current bar stool's life cycle. These glides are sold by the dozen. The bar stool that we typically use with these glides is our 1400 series but they will also fit on our 2500 series bar stools or our 3500 signature club chairs if you prefer to not use ferrules. These are rocker glides and fit tubing that is about 5/8 of an inch at its smallest end. The bottom of this glides is made of nylon. The minimum order is 8 glides.