US Cable Ties FTPM8B100 8-Inch Fir Tree Push Mount Ties, UV Black, 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 6/7 50-Pound tensile strength Can be mounted before or after bundling Made in the USA