Black Nylon Cable Clamps - Bag of 10 - 1/4'' - Secure cable, tubing, wires, etc. with these high quality nylon cable clamps. Molded in the open position for easy assembly. Nylon cable clamps are tough, resilient, light weight, and resist aging and most chemicals. Mounting hole is 13/64" in diameter. Select cable clamp size and from the drop down box.