TR Industrial Assorted Nylon Cable Ties Set, 1000 Pack of Assorted Colors and Sizes Made with industrial strength 6/6 Nylon Multiple colors for color-coding and organizing (black, yellow, blue, red) Two 500 packs, each has 225 4 inch pieces, 225 8 inch pieces, and 50 12 inch pieces Cable ties are self-locking Container has handle for carrying convenience