Engineered exclusively to enlarge and align existing holes. Especially useful in tight spots. Industrial applications include steel erection, automotive, truck and trailer manufacturing and repair. Sizes available from 5/16" to 1-1/16", and Mack truck shoulder bolt sizes .652 and .776 diameter. SA80-Set includes 1/2", 5/8", 3/4". SA80-Set-4 includes 3/8", 1/2", 5/8", 3/4".
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