Good Quality:This product is made of Aluminum alloy which promises the best quality and durability It is suitable for a variety of material joints and it can make the crimping effect better Stamper hardness can reach up to 53 HRC Manual Piston Valve:This hose crimper has a piston manual valve control By this manual piston valve you can have greater pressure than before and dont have to worry about being panting when you utilizing this cimper Separable Hydraulic Design:The model is 7842B This handheld separable hydraulic design makes the manual A/C Hose Crimper easier to use. Easily make the new hoses you need for other restorations. 7 Dies Whole Set:With 7 die sets for hose sizes and base for bench mounting, including #6, #8, #10, #12, and reduced barrier SRB #8, #10, #12, available for various hose/fitting designs. Dies snap quickly into place. Easy To Install:The hose crimper is easy to connect with a hydraulic pump with a long oil pipe. Installing the tool kit takes you less time and energy. Dissembling makes it easy to carry., Manufacturer: ZXZZAS