3M™ Screw Mount Cable Ties allow controlled positioning of standard and heavy duty cable up to 120 lb. The easy-to-use ties are made with high quality 6/6 nylon. The 3M™ Screw Mount Cable Tie CT8BK50S-M is 8.6"" in length. UV Weather Resistant Black. 50 lb tensile strength. 1000 pcs/bag.