Specifications Item: RC Car Transmission Material: Aluminum Alloy, Steel, Delrin Color: Black, Purple, Red Weight of Transmission: 115g / 4.06oz Weight of Plate: 70g / 2.47oz Weight of Driveshaft: 213g / 7.5oz (3Pcs) Total Weight: 398g / 14oz Size: As Shown Gear Ratio Front Output Ratio=1.94:1 (Excluding Spur Gear) Rear Output Ratio=2.65:1 (Excluding Spur Gear) Shaft Diameter: 5mm Featrues Machined aluminum housing, black/red/purple anodized With 56T Delrin spur gear and aluminum spur locker Steel shaft and sealed rubber bearings Heavy duty machined steel gear set (17T*1, 33T*1, 45T*1) 30% overdrive(can be mounted on driver or passenger side of skid by way of flipping the gears and shafts inside the case)