Century Wire Welding Lead Extension Cords provide durability and maximum flexibility with superior resistance to abrasion, oils, solvents, and extreme temperatures. The Lenco ends are vibration proof and have a positive locking cam type feature made from precision machined brass with molded covers. Contact pressure is rated at 600 PSI, with a pulling force withstanding 1,000 lbs. Our cables are heavy duty premium quality with UL/CSA/MSHA approvals.