20/ 40T 0.5 Modulus 20T 3mm Inner Hole Brass Bevel Gear For Shaft Drive Gearbox Bevel Wheel 20/40 Tooth Tools Accessory 20/ 40T 0.5 Modulus 20T 3mm Inner Hole Brass Bevel Gear For Shaft Drive Gearbox Bevel Wheel 20/40 Tooth Tools Accessory. Sale price : $7.32 Category : Home Improvement