Provides torque transmision and alignment.Cost effective coupling design. Specifications:Product Name: Universal JointSize: 35 x 16mm / 1.38 inch x 0.63 inch (L*D)Bore Diameter: 10mm to 10mm/0.39 inch to 0.39 inchMaterial: nickel-coated ironMain Color: Silver Tone Package Content:2 x Universal Joint