Feature: 1. This set includes 3pcs lug nut socket in the size of 17mm, 19mm, 21mm, making it easier to remove lug nuts of various car brands and models. 2. Adopting heat treated C45 steel, these sockets are very durable, and works perfectly in protecting highly polished wheel and lug nut from damage. 3. 6 point thin walled design, 360° non scratch, not easy to rust or corrode. The colour coding adds more convenience to your operation as well. 4. For painting, clear coating, plating and other wheels and bolts, also for all 1/2in drive socket manual wrenches, electric or pneumatic tools. 5. Comes with a blow moulded suitcase for easy transportation, simple storage and quick organization. Specification: Item Type: Lug Nut Socket Material: C45 Steel Function: Nut sleeve set Blue Socket Size: Approx. 17mm / 0.67in Yellow SocketSize: Approx. 19mm / 0.75in Red Socket Size: Approx. 21mm / 0.83in Square Hole Size: 1/2in Socket Height: Approx. 78mm / 3.07in Package List: 3 x Lug Nut Socket 1 x Plastic Box