Application: Especially for wheel mounting and dismounting of alloy rims. Plastic insert to protect the surface of the wheel bolts. Outside plastic sleeve (replaceable) to protect the rims when screwing the wheel bolts. Colour-coded plastic sleeve for quickly finding the correct size. Wrench sizes: 17, 19, 21 mm. Long design with borehole for locking pin or safety spring and groove for O-ring. Made in Germany. Drive: Square, hollow 12.5 mm (1/2 inch). Output: Outside hexagon traction profile. Wrench size: 17 - 21. Net weight: 0.79 kg. For impact operation. Number of tools: 3.