Optimal 21 mm open-end wrench with SW steel Pro Drive profile for DIY enthusiasts and professionals: The 21 mm wrench is made of high-quality chrome vanadium and is ideal for work in the workshop, at home, for hobbies, in the garden, and in the profession. This practical 21 mm ring-open-end wrench features the same wrench sizes for tightening and loosening deep-seated screws. Additionally, the angled ring-open-end wrench has a slim design and narrow heads, ensuring minimal space requirements. For the 21 mm wrench, the 15° angled heads create an optimal working angle for power transmission, making tasks easier. Our 21 mm ring wrench has a specially recessed wave profile that prevents slipping or stripping of screws, allowing even screws outside of tolerances to be easily tightened and loosened. Information about the 21 mm double wrench: The optimally distributed power transmission generates higher torque by up to 20%. This increased contact area ensures secure torque transfer. Technical specifications: Width: 44 mm / Weight: 0.231 kg / Height: 13 mm / Length: 270 mm / DIN 3113 B.