uxcell Plastic Blanking End Caps Inserts Bung Round Pipe Tube Insert 38mm Dia Thread 30pcs Black Item Name : Round Tube Insert;Mounting Dia : 37mm/ 1.47" Total Size : 38 x 17mm/1.5" x 0.6"(D*H);Color : Black Material : Plastic Net Weight : 183g Package Content : 30 x Round Tube Inserts