uxcell Plastic Flush Type Locking Hole Caps Cover Tube Insert 12mm Dia 100 Pcs Burgundy Color: Burgundy; Total Size: 15 x 7mm/ 0.6" x 0.3" (D*H) Material: Plastic; Net Weight: 37g Package Content: 100(+/-2%) x Tube Inserts; Product Name: Tube Insert Battery Included: No; Inner Diameter: 11mm/ 0.43" Thread Diameter(Each): 12mm/ 0.47"