Complete Die Set: Includes 7 crimping dies for a wide range of hose sizes #6 SRB (5/16'), #6-8 SRB (5/16' & 13/32' reduced barrier), #8 (13/32'), #10 (1/2'), #10 SRB (1/2'), #12 (5/8'), and #12 SRB (5/8'). Note: 8 SRB and 6 is the same die, with purple color Efficient Crimping: Driven by a high-performance hydraulic cylinder, this hydraulic AC hose crimper delivers 45KN stable crimping force. Combined with its high-strength zinc alloy body and precision sealing system to ensure firm and leak-free crimps Flexible & Easy Operation: The snap-on die design allows quick, tool-free installation and secure attachment to the press fixture. Simply turn the hydraulic valve and press the handle to achieve high-quality crimping for hydraulic A/C hoses Compact & Portable: This lightweight, integral hydraulic A/C hose crimping tool allows flexible use in tight spaces