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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

What Can the HDII Cut? A Material-by-Material Breakdown

If you've picked up the HDII Handi-Disc and thought "what can't this thing cut?" that's the right question. The short answer is: not much. But knowing exactly what it cuts, and how, means you get c …

Posted by Joseph Strong on 15th Jul 2026 Mechanical Engineer & Third-Generation Tool Designer at Bad Dog Tools

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Sharpen your dull drill bits in seconds

Bad Dog 6 Inch SDS Bits Bad Dog 8 Inch SDS Bits Bad Dog 12 Inch SDS Bits Bad Dog Diamond Sharpening Wheel How to Sharpen SDS Drill Bits (and Any Drill Bit) in Seconds If you’re won …

Posted by Joseph Strong on 19th Mar 2026 Mechanical Engineer & Third-Generation Tool Designer at Bad Dog Tools