Image EZ Boss-Lock Cam & Groove Type C Coupler x Hose Shank with Notched Shank Product Options Part Number Size Seal Material RC150EZNO 1-1/2" (40 mm) Nitrile Rubber 316 Stainless Steel RC200EZNO 2" (50 mm) Nitrile Rubber 316 Stainless Steel RC300EZNO 3" (75 mm) Nitrile Rubber 316 Stainless Steel RC400EZNO 4" (100 mm) Nitrile Rubber 316 Stainless Steel