Buy the Assembled Kit and Save! Hi-Load Version (3 bands for greater stability and smoother stroking of the plunger) or the original Flow-Style with 2 bands:
301005-1 Flow-Style, Just 2 Bands, for 60k Intensifiers
301005-2 Flow-Style, Just 2 Bands, for 40k Intensifiers
301005-3 H2O Jet Style (Interchangeable/Use to Upgrade Flow-Style) 60k Intensifiers
301005-4 H2O Jet Style (Interchangeable/Use to Upgrade Flow-Style) 40k Intensifiers
Better piston and 100% ceramic plunger (no risk of metal shoulder/ceramic piston decouple.)