Kincrome Impact Sockets & Accessories are manufactured from Chrome Molybdenum Steel (Cr-Mo), hardened and tempered to perform in extreme conditions/They are designed to be used with Pneumatic and Power tools where higher torque and force is required/Kincrome Impact Sockets and Accessories meet and exceed the following international standards/ANSI, DIN 3121 & 3129 IMPORTANT: Only Impact Sockets should be used on air or electrically operated power tools. NEVER use silver Chrome Vanadium Steel (Cr-V) Sockets which can shatter and cause personal injury. - Ideal for fastening and loosening of nuts and bolts these sockets are designed and tested to last6 Point Hex Sockets - Sockets manufactured from Chrome Molybdenum (Cr-Mo)Hardened and tempered to perform in extreme conditions - They are designed to be used with Pneumatic and Power tools where higher torque and force is required - Kincrome Impact Sockets and Accessories meet and exceed the following international standards - ANSI, DIN 3121 & 3129Specifications - Drive: 3/4Impact Sockets: Yes - Material: Chrome Molybdenum (Cr-Mo)Measurement System: Metric - Size: 32mm - Standard: ANSI, DIN 3121, DIN 3129Warranty: Limited Lifetime