Reusable: Designed to use with wide or flat tool bodies and fitting a range of wrenches from 7/16” to 11/4”, our product is a true cost saving system; Unlike traditional heat tape anchoring systems, our clamps can be reused and/or repositioned anytime. Material: Features a strong, molded eye hole for quick attachment made from high density polyethylene; The clamps can be securely mounted and used in both extreme cold and high head applications making them durable, long lasting and reusable. Tested: Subjected to an extreme and rigorous series of tests at CSA's lab to ensure maximum peace-of-mind & safety; The system not only offers the most secure & unique tool attachment product, but also the strongest clamping mechanism on the market. Sturdy: Clamps are specifically designed to prevent tools from falling through commonly used 19-4 construction site grating; Available in individual blister packs.