uxcell Hex Head Pipe Plug Connector Coupling Adapter 3/8BSP Male Thread 4pcs Product Name : Hex Head Pipe Plug;Color : Copper Tone Material : Copper;Thread Diameter : 16mm/3/8BSP HexagonHead Width : 17mm/0.67";Height : 12mm/0.5" Net Weight : 37g Package Content : 4 Pcs x Hex Head Pipe Plug