The PowerGRP GRP-7500X 1000-Count Bulk Resealable Pack of Type 21S AH-2 Black-Colored General-Purpose Cable Ties are 7â⬠long, with 50lb of tensile strength for professional applications. Theyââ¬â¢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 7â⬠cables ties around a wide range of equipment with a bundle diameter between .12â⬠(3mm) and 1.81â⬠(46mm), using the bent tips and serrated locking mechanism to form an effortless and secure grip. Designed for cable management in industrial applications and use in plenum spaces.