Pro Tie B8FTPM100 8-Inch Fir Tree Push Mount Cable Tie, UV Black Nylon, 100-Pack Designed to securely grip 1/4-Inch pre-drilled holes in almost any material ranging in thickness from .052-Inch to .25-Inch Made from heat stabilized black nylon 6/6 50-Pound tensile strength Can be mounted before or after bundling ProTie carries over 250 cable ties, mounts and tools to provide superior range of options