iBOLT sPro2 Accessibility Post / Pole / Rail / Handlebar Clamp Mount for Wheelchairs / Exercise Equipment. 1-inch / 25mm / B Size Ball joints that are compatible with all industry-standard 1 inch / 25 mm / B size adapters and arms. Our industry-standard mounting patterns make it easy to add on/ upgrade/ or replace a currently installed mounting solution. The mount fits on poles, posts, and flat surfaces measuring from 0.25 inches to 2.5 inches in diameter.
