Description: 【Durable】: RC Car Joint Shaft Transmission, Made of metal, which is more durable and sturdy, practical. 【RC Car Replacement】: Universal Joint Drive Drive Shaft is nice replacements for your old or broken parts. 【Size】: RC car accessory, The diameter of the universal joint is 12mm, the diameter of the central shaft is 9mm, and the inner diameter of the hole is 5mm. 【Applicable Model】 RC car upgrade parts, perfect for SCX10 CRAWLER 1/10 RC Car. 【Fine Workmanship】: Drive shaft is Cross universal joint structure, internal drive design. Size Chart: Style A hole to hole:6cm-7.5cm/2.36inchx2.95inch total length:6.8cm-8.6cm/2.68inchx3.39inch Style Hole to hole:7.5cm-9.6cm/2.95inchx3.78inch total length:8.4cm-10.2cm/3.31inchx4.02inch Style C hole to hole:8.6cm-11.5cm/3.39inchx4.53inch total length:9.4cm-11.9cm/3.70inchx4.69inch Style D: hole to hole:9.6cm-13cm/3.78inchx5.12inch total length:10.4cm-13.9cm/4.09inchx5.47inch Style E: hole to hole:11.2cm-16cm/4.41inchx6.30inch  total length:11.9cm-15.9cm/4.69inchx6.26inch Style F: hole to hole:12.1cm-17.5cm/4.76inchx6.89inch total length:12.9cm-17.9cm/5.08inchx7.05inch Package Includes: 1 RC Joint Shaft Transmission 2 M4 screws Note: Please allow slightly errors due to manual measurement and different monitors.