The Thread Checker Is An Accurate And Easy-To-Use Thread Verifier For Both Nuts And Bolts Conveniently Assembled Onto A Wire Loop, It Is Especially Well Suited For Distinguishing Between Similar Inch And Metric Threads Each Size Has A Nut And Bolt Checker On The Same Gauge Bolt And Nut Thread Checker, Bolt Length And Screw Size Checker In Both Metric And Standard Sizes Pre-Drilled For Easy Mounting (Top And Bottom) Mounted On Heavy-Duty, 12 Sintra (Pvc Foam Board) Overall Size: 3W X 37L
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Item# : SPM16278801024
Model # : SWTC-WM1