Double Dog Arbor – One Arbor. Two Sizes. Total Compatibility.
The Bad Dog Double Dog Arbor is the perfect mounting solution for your 3" HDII or Bad Dog Diamond Sharpening Stone. Whether you're sharpening tools in the shop or grinding through tough material in the field, this arbor gives you reliable performance and expanded compatibility in one compact, durable package.
The kit includes two interchangeable threaded flanges—one for 1/4" arbor tools and one for 3/8" arbor tools—so you can use it across a wide range of grinders, rotary tools, and sharpeners. That kind of flexibility means fewer accessories to juggle and more time spent getting real work done.
✅ Compatible with 1/4" & 3/8" Arbors – Includes both flanges for maximum tool compatibility
✅ Works with 3" HDII & Diamond Sharpening Stone – Purpose-built to match Bad Dog performance
✅ Solid Steel Construction – Strong, dependable, and built for shop abuse
✅ Quick Thread Install – Fast changes, firm lock-up, no slippage
✅ Low-Vibration Mount – Keeps your wheel running smooth and true
If you’re using the 3" HDII for precision cutting and grinding in tight spaces, or the Diamond Sharpening Stone to maintain a clean edge on your tools, this arbor gives you the perfect, stable platform to work from.
One arbor. Two fits. Built for the bite.
Double Dog Arbor – Another lifetime tool from Bad Dog.
Absolutely. The industry standard for grinders is as follows: Rotary Tools (i.e. Dremel TM) - 1/8" 3" Cut off tools and Die Grinder - 1/4" & 3/8” 4" Angle Grinder - 5/8" 4-1/2", 5”, 6", 7" Angle Grinder - 7/8" arbor flange for a 5/8" coarse arbor shaft At Bad Dog, we find that an HDII with a 7/8" arbor flange runs truest because it is a more precise fit. The 4-1/2" and 6" Flange wheel use the 5/8" Coarse thread which is standard on ALL grinders. Call us at 800.252.1330 if you have any questions.
Wood: It will shape wood well but burns when cutting. Glass: The HDII is too aggressive and leaves a jagged edge.
Nothing lasts forever but we Guarantee the HDII for LIFE! If you ever dull or damage your HDII return it to us and we will repair or replace it. For full details see our Lifetime Guarantee page.
We'll replace it - even if it's your fault! Here's a link to the details of our Lifetime Guarantee.
Sometimes when cutting softer metals like aluminum the HDII will "gum" up. If this happens to you, simply run your HDII through a concrete block and it will be as good as new.
As safe as they get! Cut-off wheels can be some of the most dangerous tools in a shop. We are not telling you that you don’t need to be wearing safety when using our wheel, however, the 46 diamond grit is embedded on a hard steel plate to ensure that the wheel will not fly apart on you.
Dull or damage our tools and we will repair or replace them.
Economical Flat Rate Shipping for orders under $50 in the USA. Some exclusions apply.
Don’t love your Bad Dog Tools? Return them in 60 days for your money back.
