This product securely pulls ACSR, AAC, and bare copper cables. It can hold cable sizes from 0.68-Inch to 1.42-Inch (17.3 mm to 36.1 mm). The Fine Sawtooth jaw geometry offers increased grip strength. The grip automatically closes on the cable to maintain its initial position. Made in the USA, it features a large handle opening that can accommodate various hooks on hoists, winches, and tackle blocks. Its maximum safe load is 12,000-Pound (5443 kg). This product also boasts a patent pending design.