This is an upgraded steel "Long" driveshaft for you custom Axial build or the front axle on the Ground Pounder monster truck. These all-steel driveshafts feature a 5mm output shaft size along with a hex-shaped slip joint that's far superior for handling hi-powered brushless setups.  This kit includes 1 male and 1 female driveshaft half, plus four m4x4mm set screws. 

Collapsed Length:  4" (102mm)      Extended Length:  5-1/2" (140mm)