Double ring end wrench 4M 20x22mm

• Thin-walled heads, both sides chamfered
• 12-point Dynamic-Drive™ profile provides longer life for screws and nuts
• Chrome plated micro-matte finishing provides high quality surface
• High-performance alloy steel
• Optimised legibility and identification with high-clarity imprint
• Standards: ISO 1085, ISO 10103 and DIN 837