Rubber Round Shape Tubing Insert Caps 28mm Dia Bottom Size 20 Pcs Product Mame : Round Tube Insert;Top Diameter : 30mm / 1.2" Bottom Diameter : 28mm / 1.1";Total Height : 29mm / 1.1" Material : Rubber;Color : Black Net Weight : 163g Package Content : 20 x RoundTube Inserts