Plastic Round Caps Tubing Tube Insert Cover 38mm Dia 12 Pcs Black Item Name : Round Tube Insert;Thread Diameter(Each) : 28 x 30mm/ 1.1" x 1.2"(ID*OD) Total Size : 38 x 17mm/ 1.5" x 0.67"(D*H);Color : Black Material : Plastic Weight : 99g Package Content : 12 x Round Tube Insert