ㆍLight weight and CNC Machined from solid billet carbon steelㆍDesigned for scale and trail trucksㆍBlack finishㆍHeat treatment for durabilityㆍSuper smooth operation (Precision splines)ㆍFully assembledㆍCompressed Length: 123mmㆍExtended Length: 151mm (Leaves 12mm spline engagement, recommended not to exceed this length)ㆍLaser engraved for authenticityㆍMade to fit 5mm output shaftNote: For one truck, you will need 2 of this product.