... / ISO9001:2000 Hardness: 50--58 HRC PIN standard 1) American type sledge hammer: 4oz, 8oz, 12oz, 16oz, 20oz, 24oz, 32oz, ... , 400g, 500g, 600g, 700gFrench type claw hammer: 500g, 600g, 700gMagnet claw hammer: 21MM,23MM, 25MM, 27MM2) Australian type Stone hammer: 1kg, 1.25kg ... , 1.5kg, 2kg German type stone hammer: 0.8kg, 1kg, 1 ...