The Snake Tong Concave Gripper is a replacement part for the concave end Snake Tong. You can also remove two pins, and change from a convex style Snake Tong, to a concave style Snake tong. These parts are machined on our in house cnc machines out of a block of T6 6061 Aluminum. This allows for much stronger yet lighter parts then any cast tongs or tong parts on the market.