Drill Block Tool for Bolt Thread Ends

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Available for Metric or US Standard bolts, Select Type Allows easy drilling of bolt threaded ends to allow use of the bolt with a safety clip or wire Metric Bolts - 5 Holes - M6x1. 0, M8x1.0, M8x1.25, M10x1.25, M10x1.5 US Standard Bolts - 6 Holes - 1/4-20", 1/4-28", 5/16-18", 5/16-24", 3/8-16", 3/8-24" Drill Hole Size 5/64" or #48 Bolt Drill Jig Show more