StrongHold JP4W-X20 J-Pro J hook with Wall Mount Bracket have a patented design, featuring complete horizontal and vertical 1" bend radius control. This feature prevents pinch points and degradation of cable performance. They are suitable for use in air handling spaces and are UL listed. Requires 1/4” (M6) mounting hole for user supplied screw, 4.0” (101.6mm) max bundle capacity. Made of Nylon 6.6, are black in color and come in packages of 10.