Patented design allows removal of bolts and nuts up to 90% rounded by biting exclusively into the flats, only gripping tighter with each impact. Use to remove rusted and rounded hex bolts and nuts and install new fasteners.
For more information about HG11S : https://www.matcotools.com/catalog/product/HG11S/1-2-DRIVE-11-PIECE-SAE-HEX-GRIP-DAMAGED-FASTENER-IMPACT-SOCKET-SET/
For more information about HG11M:
https://www.matcotools.com/catalog/product/HG11M/1-2-DRIVE-11-PIECE-METRIC-HEX-GRIP-DAMAGED-FASTENER-IMPACT-SOCKET-SET/
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