1/2' Combo Drill Bit for installing Lead Anchors for ...
1/2' Combo Drill Bit Installs Lead Anchors for 1/4-20 Combo Sidewalk Bolts For all masonry surfaces both block and concrete. Smaller pilot bit starts the hole in the right location. Larger 1/2' step bit drills the perfect hole for setting lead machine screw anchors.
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