The PowerGRP GRP-418X 1000-Count Resealable Pack of Type 21 Natural-Colored General-Purpose Cable Ties are 4” long, with 18lb of tensile strength for professional applications. They’re made from polyamide 6,6 nylon, resulting in a high mechanical strength and a wide temperature range (-40 F to 185 F). Fasten these 4” cables ties around a wide range of equipment with a bundle diameter between .06” (1.5mm) and .87” (22mm), using the bent tips and serrated locking mechanism to form an effortless and secure grip. Designed for cable management in industrial applications.