Features:Diameter: 30mmRibbed for easy assembly and secure fittingGreat to cover sharp tube edgesPerfect to make ends safe after buildingIdeal for keeping water out and stop rusting from insideBenefits of using plastic tube inserts includes:Offers a neat & safe finish to tube endsTube inserts can prevent dirt & dust ingressPush in application for tight fitPackage Included:10 x Round Plastic End Caps Insert Plugs