Barstool base for our adjustable height bar stools and tables. We offer 3 different diameters and styles. Most backless stools will come with our 15.2" diameter base. Mid-back stools usually have a 16.2" base and high back and wider stools as well as our bar tables will have a 17.7" base. Also available is the large diameter base with a 5 lbs ingot welded to the base for extra stability for commercial use.