uxcell Plastic Blanking End Caps Round Tube Insert Bung 37mm Dia 12 Pcs Black Item Name : Round Tube Insert;Thread Diameter(Each) : 37mm/1.47"; Total Size : 38 x 17mm/1.5" x 0.7"(D*H);Color : Black Material : Plastic Weight : 65g Package Content : 12 x Round Tube Insert