uxcell 12 x Black Plastic 45mm Dia Round Tubing Tube Insert Caps Covers Item Name : Round Tube Insert;Thread Diameter(Each) : 45mm/ 1 3/4" Total Size : 45 x 17mm/ 1.8" x 0.7"(D*H);Color : Black Material : Plastic Weight : 95g Package Content : 12 x Round Tube Insert