Reusable: Designed to use with round and hex shank tool bodies, our product is a true cost saving system; Unlike traditional heat tape anchoring systems, our clamps can be reused and/or repositioned anytime, protecting workers from tools dropped at height. Material: Features an additional rubber insert for extra sizing capabilities and increase clamping grip; 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.