• BoltSizer Tri-Gage Combo Tool is ideal for mechanics, machinists, engineers and do-it-yourselfers.
• It is a Bolt Sizer and Thread Pitch Gage stamped with a bolt grade chart, for ease and accuracy during bolt replacement.
• The Bolt Sizer also indicates the correct wrench size to use to install the bolt.
• High-grade stainless steel gage, so it’s rust free
• Easy to use, and saves you time
• Pre-drilled to put on your tool belt
• Automotive, industrial, marine, mining, construction and more applications
• Machine stamped markings for durability
• Inch/SAE Sizes: 1/4in.-1in. bolt diameters