• For trucks and trailers with S-cam brake system using manual or automaticslack adjusters.
• Provides fast check of brake clearance between drum and brake shoe.
• Right angle teeth grip in all directions for maximum bite and minimum wear.
• Patented undercut tongue and groove design assures, no slip jaw action.
• Patented reinforcing edge minimizes stress breakage.
• Patented PermaLock® fastener eliminates nut and bolt failures.
• Distinctive CHANNELLOCK BLUE comfort grips