20PCS Rubber Grommets 1/2″(12mm) Drill Hole, 5/16″(8mm) ID Durable Black Sili…
A versatile essential for pros and DIYers alike. [Guard Wires, Cover Holes]: These silicone rubber gaskets protect wires, pipes, and holes, defending against scratches and rough edges. Size: 5/16″ID, 1/2″DH.