uxcell Plastic Round Tubing Hole End Cap Cover Pipe Tube Inserts 32mm 30pcs Black Color: Black; Total Size: 32 x 15mm/ 1.3" x 0.6" (D*H) Material: Plastic; Net Weight: 107g Package Content: 30 x Round Tube Insert; Product Name: Round Tube Insert Inner Diameter: 24mm/ 0.94" Thread Diameter(Each): 31mm/1.2"