For use with 40 spoke rim

It features a metal throttle tube

5 spring clips per pack

they are for the unit 650s

Black Steel Solo Seat Hinge / Pivot Bracket - Weld-On Lever Type_Lever Sets For use with 40 spokeThe Lowbrow Customs Solo Seat Pivot is made right here in Cleveland, Ohio. Heavy duty steel black powder coated for a beautiful finish paired with custom made, chrome plated mounting hardware and a raw, mild steel, weld on pivot block that is coped for a 1. 25 inch diameter frame backbone. You can easily open up the radius of the pivot block with your grinder to fit other diameter frame backbones, or cut if off flat if welding to a flat mounting