About this item?PRECISE? The Jaw is processed with Wire EDM Cutting?DURABLE?The head part is made of one piece high-grade special tool steel?LABOUR-SAVING?Long handle for extra mechanical advantage?ERGONOMIC?Comfortable grip with anti-slip design for easy operation?PROFESSIONAL? Specially designed for battery lugs and open barrel connectors with capacity of 5A/10A-20A/30A-40A/50A-60A/80A-100A