uxcell Black Plastic Blanking End Caps 38mm Round Tube Insert Bung 4 Pcs Item Name : Round Tube Insert;Thread Diameter(Each) : 38mm/ 1 1/2" Total Size : 38 x 17mm/ 1.5" x 0.7"(D*H);Color : Black Material : Plastic Weight : 23g Package Content : 4 x Round Tube Insert