The 71550 A/C Hose Crimper from Mastercool is the company's "manual style" crimper. The die snaps quickly into place and requires no pins or screws. This unit can be easily mounted to a bench using the holding fixture or can be held securely in a vice. The kit comes with a complete set of dies covering standard hose sizes of #6, #8, #10 and #12. Optional die sets are available for reduced barrier type hoses.