multipurposebit - Posts - Bad Dog Tools

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Hi! We're the Strong Family - Ann, Joseph and JJ. We've been working on cars and DIY'ing since we can remember. So, back in 1983, when a shattered grinding wheel nearly caused serious injury while we were working on our Bluebird Bus, we decided to come up with a tool that was safer, stronger, better. That first tool has lead to a whole line of 'em and for three generations now our family-owned company has been making specialty cutting and drilling tools that tradesmen and DIYers alike can count on - all backed by our Lifetime Guarantee.

Individual Multi-Purpose Drill Bits

4.5" Heavy Diamond II - ENDLESS Cutting + Grinding Wheel

4.5" HDII Flange - ENDLESS Flush Grinding + Cutting

14 Piece Bad Dog Multi-Purpose Drill Bits

Individual Rover Bits

3" HDII - ENDLESS Cutting + Grinding Wheel

19 piece Bad Dog Multi-Purpose Drill Bits

1.25" HDII - ENDLESS Cutting + Grinding Wheel

Dried Drool Cutting Wax

5 Piece Rover /Forstner Bit Set A - Fast Cutting Forstner Bits

18 Inch Drill Bit for Concrete Block: Drill All the Way Through in One Pass

The Problem Some jobs need a hole through the full length of a concrete block. A standard bit runs out of reach halfway down, and you're stuck. An 18 inch drill bit for concrete block fixes t …

Posted by Joseph Strong on 22nd Oct 2026 Mechanical Engineer & Third-Generation Tool Designer at Bad Dog Tools

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Multi-Purpose Drill Bits: One Bit for Tile, Metal and Masonry

Open any contractor’s drill case and you’ll probably find a mess of bits: high-speed steel for metal, a masonry bit for brick, and a special glass and tile bit for the backsplash job. E …

Posted by Joseph Strong on 23rd Sep 2026 Mechanical Engineer & Third-Generation Tool Designer at Bad Dog Tools