Three sizes included - The socket set includes a 1/2 inch drive socket wrench with metric sizes 17 mm, 19 mm, and 21 mm for versatile wheel nut compatibility. High performance and durability - Constructed from high-quality chrome vanadium steel. - Heat-treated for increased strength and long-lasting durability. - Colour plated to resist rust and corrosion, helping the tools stay reliable over time. Protective design for rims and nuts - The plastic case is designed to avoid scratching aluminium rims. - The socket protective insert has thin walls and a hexagonal grip to securely hold wheel bolts. - The power insert set protects the tops of wheel bolts, wheel rims, and wheel nuts during tyre changes, reducing risk of damage. Easy to use and transport - Each size is colour-coded and clearly marked for quick identification. - Supplied with a plastic carrying case for easy storage and transport. Use scenarios - Roadside tyre change: Quickly locate the correct size (17, 19, or 21 mm) with clear colour coding and swap wheel nuts safely without damaging surrounding components. - Alloy wheel maintenance: The protective design safeguards aluminium rims and bolt heads when removing or reinstalling wheel nuts. - Workshop efficiency: In a professional setting, the three sizes and sturdy chrome vanadium construction support frequent tyre changes with reliable performance and easy organization.