Perko Vented Gas Fill for 1-1/2" Hose Straight Neck Black 303 Products The boat-end aluminum safety hook

The boat-end aluminum safety hook has an easy-to-use double-action gate that automatically locks closed

Sheaves feature sleeve bearings to handle high static loads and are ideal for halyards or limited purchase systems on cruising boats

Brazed seam for maximum strength

or more commonly

Perko Vented Gas Fill for 1-1/2" Hose Straight Neck Black 303 Products The boat-end aluminum safety hookVented Gas Fill for 1 1 2" Hose Straight Neck Product Description Straight Neck Black or White Polymer Integral Tank Vent with Flame Arrestor No Deck Plate Key or Ground Wire Required Flip Top Cap Technical Information For Hose Size: 1 1 2" For Vent Size: 5 8" Neck Length: 2 7 16 " Screw Size: #10