Model: RWB1591Quick Product Specs:TENOB high quality, economy priced, UV stabilised nylon, fuel or water tank breather.Supplied complete with stainless steel mesh spark arrestor and retaining nut.Suits 16mm hose. Drill a 20mm hole for mounting.Material Description: UV stabilised nylonColor: WhiteDimensions: Max Dimensions: 75mm x 35mm x 35mmCut-Out Hole: 20mm Diameter