These miniature cam action clamps swing into position and clamp straight down onto the workpiece for direct downward pressure. The arm swings completely out of the way to allow for easy loading and unloading of the workpiece. Ideal for repetitive clamping operations. Comes with a contact bolt that can be reversed for finished or rough surfaces. Mounts from the top with two mounting holes. Part numbers ending with R have a clockwise clamping direction, part numbers ending in L have a counter clockwise clamping direction. The body, handle and spindle are made from 1045 alloy steel. The clamp arm and cam shaft are made from 4140 alloy steel. Parts are heat treated with electroless nickel plating. The electroless nickel plating provides improved corrosion and wear resistance to increase the life of the clamp in harsh environments.