Heat-treated steel frames for strength * Red vinyl coated handles for a firm, comfortable grip * Jaws can be detached and replaced, or resharpened, Jaws should be ground in pairs and referenced from the serrations * Jaws can be adjusted on the frames, each jaw has an allowance of about 1/4" to cut tile or to adjust after resharpening * Stud and stop screw on the handle can be adjusted for proper jaw closure, thereby preventing damage from excess pressure on the jaws