Features:*3pcs/Set 17/19/21mm Tire Protection Sleeve Wheel Deep Impact Nut Sockets.*Made of high quality materials, durable and practical, quenched and tempered treatment, corrosion resistant.*Adopts plastic sleeves and plastic inserts for protection of aluminum rim and ball bearing slots and holes, fits for manual and impact operation, suitable for home and professional use.*Ultra-deep locking wheel nuts to protect wheels and bolts from damage.*Hexagon drive design, non-slip.*With different colors and easy to identify.*Small size and easy to carry. Specifications:*Material: Steel + Plastic*Surface Treatment: Chrome Plating*Color: Red, Yellow, Blue (As Pictures Show)*Size: 1/2 inch Drive, 17mm, 19mm, 21mm*Quantity: 3pcsPackage Contents:3*Tire Protection Impact Nut Socket1*Storage boxNote:1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.