DescriptionProduct Name : Spiral Bevel Gear; Fit for : 9553Material : Metal;Ring Gear Size : forty seven x 15mm/ 1.9" x 0.6" (Dia*Max.T)Fit for Shaft Diameter : 12mm/ 0.47";Pinion Gear Size : 17.3 x 15mm/ 0.68" x 0.59" (Dia*Max.T)Fit for Pinion Shaft Diameter : 6mm/ 0.24";Package Content : 1pcs x Spiral Bevel Gear Set