Self-Locking Nylon Ties provide a convenient method for closing bags. Tight locking ties secure contents and create a tamper evident seal. Strong nylon tie must be cut for removal. Ideal for attaching tags, bundling wires and temporary repairs. Supplied 250 per package.Shipping Weight: 1 lbsShipping Dimensions: 10.00 x 12.25 x 0.75Research or further manufacturing use only, not for food or drug use.