All steel, 203mm (8") long with 25mm (1") jaw. Plastic coated. Has a limit screw which can be adjusted for glass thickness.

These Running Pliers are good quality and feature a convex and concave jaw. Insert the pliers about 1/2" onto the score line with the inscribed line on the concave jaw in-line with the score and squeeze gently. You will be able to "run" long, straight lines and gentle curves easily with no effort.