Quality Ground Clamp, 300 A, 1 0 and 2 0, 300 no checkout 000 possible combinations No reset tool 000 possible combinations No reset tool required Large ergonomic dials with exclusive blind dial feature permit operation with gloves Delivers 1000 or more cuts with no need for wheel change Advanced diamond technology provides extreme durability in metal cutting applications Made with diamonds so that the cutting depth remains the same throughout its life for control Tough brass hinge pin is durable and allows both jaws to carry current Enclosed heavy duty spring assures a powerful bite on the work Insulation on top and bottom jaws provides extended spring life