uxcell Black Plastic Blanking End Caps 1 1/2" Round Tube Insert Bung 24 Pcs Item Name : Round Tube Insert;Mounting Dia : 37mm/1.46" Total Size : 38 x 16mm/ 1.5" x 0.6"(D*H);Color : Black Material : Plastic Weight : 125g Package Content : 24 x Round Tube Inserts