uxcell Round Plastic Blanking End Cap Tubing Tube Insert 22mm Dia 5 Pcs Item Name : Round Tube Insert;Total Size : 22 x 16mm / 0.86" x 0.63" (D*H) Thread Diameter : 20mm / 0.79";Color : Black Material : Plastic Weight : 20g Package Content : 5 x Round Tube Inserts