These black colored screw mount cable ties are made from 100% natural nylon for LaVanture Products. The black color aids the cable tie in resisting degradation by UV rays. These ties have a tensile strength of 50 pounds. Due to their size, you can utilize the ties in a range of a small scale applications. A simple #10 size screw, bolt or rivet and this cable tie is ready for use! Comes in a 100 piece bag.