• Manufactured from Chrome Vanadium Steel, hardened, tempered, chrome plated and polished for corrosion protection
• Single Hex
• Chamfered ends allow positive nut location
• Sockets meet DIN 475, 3121 & 3120 International Standards
• Size 5/16" Finish Mirror Polish Material Chrome Vanadium Steel Standard DIN 475, 3121 & 3120