The Motor Trend MAT-CLMP Replacement Clamps are easy to use and install. The heavy duty professional grade 500-AMP clamps are for top and side post batteries. The insulated handles provide comfort and (+) and (-) are marked on each clamp. 2 copper coated jaws are on each clamp. Great for replacing old or used jumper cable clamps, and fit almost all standard cables. Trust the brand you buy! Motor Trend has been the nation’s #1 automotive authority for over 60 years.