FREDRIX canvas pliers are made of chrome plated steel. Perfectly mating teeth ensure a positive no-slip grip. The handle has a built-in spring return that opens the pliers when you release. 2 1/4″ wide bite on the canvas. Details:Chrome plated steel 2.25″ wide bite Perfectly mating teeth ensure a positive no-slip grip Handle has a built-in spring return that opens the pliers when you release For stretching canvas Won't damage the canvas