Tie all types of parts or pieces of cut work tightly, securely and safely. Useful in garment factories, knitting mills, cleaning and dyeing plants, laundries, rug and carpet plants, etc. No knots to tie - just pull to lock. Even the roughest handling won't loosen them. In fact, the more the bundle is thrown around, the tighter the cord becomes fixed in the unique hook. A simple pull on the cord, however, will release it instantly - no matter how tight it gets.