About this itemCompatible with 1.25"" (1-1/4-inch) ASTM F1807 copper ringsSmooth polished jaws, no damage to fittingsMade of high carbon steel, durable for a long service lifeErgonomic handles bring comfortable and non-slip operationsAdjustable crimping force makes crimping tight and reliable even after a long time of usingThe handles are 20% longer than normal crimping tools, ensures effortless crimping