MPQ2237 Features: * 0.47"" Snap bushings * For metal chassis keep wires safe * Eliminate sharp edges and insulate your raw-edged holes in metal chassis * Easily locks into hole firmly with fingertip pressure * Protect electrical cables, ropes, utility lines passing through metal chassis * 0.13"" Maximum steel thickness * UL approved * UR listed * 1 Bag of 10 * Mounting hole diameter: 0.37"" * Inside diameter: 0.25"" Specifications: * Made from nylon 6/6, 94V-2 Dimensions: * Dimension: 0.41"" H x 0.47"" W Warranty: * 1 Year warranty