
Long enough to go through a cin block wall on one side. I made the template out of a 1 x 6 lumber with a 2" diameter pre-drilled hole to keep the bit from rolling on the wall and it didn't hurt my wife's foot to hold the template in place held. It seemed slow, but it worked.

Tool set Stels Tool set, 1/2", 1/4", CrV, plastic case 94 pcs, Stels, 94 pcs, black
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π§± Bosch 2607017164 Piece Setter Masonry: Advanced Tools for Precision Masonry Work
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Bit set DeWALT DT7969-QZ, 32 pcs.
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