Product Name:Spiral Bevel Gear Fit for:Makita 9523 Angle Sander (Non-OEM,Not Include Here) Material:Metal Ring Gear Size:46 x 15mm/ 1.8'' x 0.59'' (Max.Dia*T) Fit for Shaft Diameter:10mm/ 0.39'' Pinion Gear Size:18 x 12mm/ 0.7'' x 0.47'' (Max.Dia*T) Fit for Pinion Shaft Diameter:8mm/ 0.31'' Color:Dark Gray Package Content 1 x Spiral Bevel Gear Set for Makita 9523 Angle Sander