Kit # 3A 4,000 PSI Hydraulic Conversion Kit 110 volt Hi volume / lower pressure system. This is the Mac daddy of conversion kits for the MB105 Bender. If you want speed, try this - 1 3/4" x .095 D.O.M. Tubing bend one full stroke of the cylinder in 9 seconds, with approx. 8 second retract. The best system we have ever worked with. Period!