Hydraulic Copper Pipe Press Tool with 3 Sets of Dies – Compatible with 1/2", 3/4", 1" Copper Pipe, F877 Stainless PEX Press Sleeves & ASTM F1807 PEX Copper Rings (3/8"–1"). Durable & Leakproof- The aluminum alloy hydraulic cylinder prevents oil leakage, ensuring stable performance for all Copper Pipe Press Tool applications.