Heavy-duty plated spring comes with tough vinyl insulators in red or black. Length: 3 inches. Jaws open to 15/16-inch. Jaws clamp solidly on terminal, stud, or bare battery post. Copper plated. For auto and marine batteries. 1 red and 1 black clamp per package. UL (Underwriter's Laboratories) listed. WARNING: This product can expose you to chemicals including DEHP which is known to the state of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov -