Platinum tools box of 100 1/4 x 20 - 2inch id bridle rings support and secure your communication and other low voltage cables with these various sized bridle rings.Simple, effective and constructed of solid, low carbon steel.The perfect choice for cable management made easy! application: drop wire concrete beam flanges c purlins z purlins material: low carbon steel finish: electro-galvanized zinc load capacity (all sizes): max static load 45 lbs