What's Included:1x Center Steel Driveshaft1x Center Steel Driveshaft Mount2x M3 X 3mm Set Screws (Z-S0124)2x M3 X 6mm Set Screws2x M3 X 8mm Button Head Self Tapping Screws (Black) (Z-S1576)Notes:Fits RC4WD Miller Motorsports 1/10 Pro Rock Racer RTR (Z-RTR0061)Specifications:Heavy Duty Machined SteelAdvanced Internal SplineHeat Treated for DurabilityLength: 2.36in / 60mm OD: 0.39in / 10.0mmTravel Distance: 0.39in/10.0mmHole Size: 0.20in / 5.1mmTotal Weight: 1.34oz / 38.2g