Specifications Material: Stainless Steel Universal Joint Diameter: 12mm Shaft Diameter: 6mm Slip-end/U-joint end Hole: 5mm Length: 68mm-229mm (2.68" to 9") Set Screw Pin: M4, 2Pcs Set Screw: M4, 2Pcs Weight: 69g/2.43oz/Pcs Poly bag package Featrues Quality stainless steel, CNC machined Extremely compact to solve fitment issues associated with larger driveshafts One size fits most: Cut to length design. Simply chose your length, cut off the end of the shaft, and assemble with a set screw Length range 68mm-229mm (2.68" to 9") With standard 5mm input/output ends Shaft etched with millimeter measurements to assist with measuring and cutting Splines are keyed for proper u-joint alignment Designed for Crawlers, Scalers and Sportys (not intended for rock bouncers or Formula Off Road cars)