The 120pcs 1/2 Inch R-Type Cable Clamps are designed for cable management and organizing electrical cables and power wiring. These nylon wire cable clips come with M4 screws for secure fastening. With a size of 1/2 inch and a thread size of 12.7mm, they are compatible with a groove diameter of 11.7mm. The white color and R-type screw head style make them versatile for various applications. This set includes 120 pieces, providing you with an ample supply for your organizing needs.