The NOCO GBC003 HD Precision Boost battery clamps are heavy-duty tools designed for 12-volt gasoline and diesel engines. The HD Precision clamps feature a clamp-crocodile profile and are designed to fit battery terminals of any shape or size, from small battery terminals in tight spaces to top or side-mounted terminals to large battery terminals. The strong and durable springs of the clamps provide maximum current flow with minimal power loss. The components of the HD Boost Precision clamps do not melt or emit smoke, have high current-carrying capacity, and are reinforced with full metal construction. Heavy-duty battery clamps designed for 12-volt gasoline and diesel engines. Crocodile-type design for jump-starting batteries in hard-to-reach areas and with large terminals.