20 Pcs Black Plastic 3/4PT Thread Round Tubing Pipe Insert Caps Covers Product Name : Round Tube Insert;Inner Diameter(Each) : 20mm/ 0.78" Thread Diameter : 25mm/ 3/4PT;Total Size : 25 x 21mm/ 1" x 0.83"(D*H) Color : Black;Material : Plastic Weight : 57g Package Content : 20 x Round Tube Insert