HDII - 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

How to Flush Grind a Flat, Smooth Surface with an Angle Grinder

5" HDII Flange 4.5" HDII Flange 7" HDII Flange { "@context": "https://schema.org", "@graph": [ { "@type": "HowTo", "name": "How to Flush Grind a Flat, Smooth Surface with a …

Posted by Joseph Strong on 8th Apr 2026 Mechanical Engineer & Third-Generation Tool Designer at Bad Dog Tools

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How the HDII Makes your Angle Grinder Safer

Why the HDII Makes Your Angle Grinder Safer One of the biggest reasons people choose the HDII is safety, especially when compared to traditional thin cutoff wheels. At the hardware store, you’l …

Posted by Joseph Strong on 4th Feb 2026 Mechanical Engineer & Third-Generation Tool Designer at Bad Dog Tools