Outdoor UV Zip Tie Fasteners (7 Inch, Black) Quick and Easy to Install: Low insertion and pull-through force. Designed with an Angled Tail: Provides quicker initial insertion alignment, and tail finger grips allow easier handling & tightening. Stronger: High Tensile Strength is achieved from one piece extrusion and advanced teeth design, for secure locking attachment. Safer: Rounded Edges provide added safety and eliminates insulation damage. Purer Nylon: Manufactured from filtered nylon, reducing particle contamination.