2″(51mm) WATER Boat Deck Fill/Filler Keyless Cap Stainless Steel 316 Marine Flip Tab Cap Angled Neck for Boat Yacht RV Trucks Tractors with Screws, Spare O-RingPackage Includes:1 piece 51mm Boat Deck Filler Angled Neck ,3 pieces screws,1 piece rubber Spare O-RingThe Marine Deck Filler Tank tube outer diameter is 2 inch(51mm). The outside diameter of the flange is 80.5 mm.Marine FUEL/GAS /WATER/DIESLEL tank filler angled neck is cast from marine grade stainless steel 316, the surface is hand mirror polished,the surface is smooth and beautiful.This marine deck fuel filler with a keyless cap is pretty convenient. What you can do is just to lift built-in tab on cap and turn to open or close. Besides, there is a stainless steel 316 retaining chain, which avoids losing or misplacing cap.Marine Deck Fill Cap Angled Neck fits for Boats, yachts, caravans, RV, trucks, tractors and trailer fuel tanks etc.Package Includes:51mm Marine Boat Deck Filler Angled Neck (SS 316) X 1;4.8*25mm Screws (SS 316) X 3 ;Rubber Spare O-Ring X 1;