Item Description:Features:*Easy to install, replace the one directly.*6 gears for adjustable.*Nice spare part to upgrade the peormance of your electric tools.*Suitable for 180 230 high power polishing machine.Specifications:*Material: Plastic+Metal*Color: show*Size: 65 x 50 x 12mm(L*W*H) (Approx.)Pacage Contents:1*Speed Controller SwitchItem Specification: