Torsion spring type for strong, easy connection to the clamp Product features SKU JEFECCRO400 Rated Duty Cycle 35% @ 400Amp, 60% @ 300Amp Max. Cable Capacity 70mm Jaw Opening 2″ Gross Weight 0.25 kgsLightweight, tough and durable construction with easy clamping mechanismHDG Steel body & lever with copper conductor