Package List - 200Pcs 1/2inch R-Type cable clamps in one package. enough quantity to meet your daily use. Wide Applications - Can be used for the management of various electrical cables, such as TV cords, routing cables, snowmobile wires, LAN cables, Ethernet cable, computer and electrical power cables , desk wall cables. Reusable - These cable clips are reusable. Just need to unscrew the screws when the circuit need to be replaced. Without cutting, fast and convenient. Easy to Operate - Just put the wire into the round hole and tighten the wires with one screw, and then fis it on the wall or the ground. That can help you save time, free from annoyance of mess wires. Durable & Fire Protection - These cable clamps are made of nylon PA66 material, which is aging resistance, corrosion resistance, cold resistance, UV resistance and fire protection. And the fire rating reaches to 94V-2.