80 - 36 Grit Type 27 Bonded Wheel
3M's best quality, these 1/8" thick bonded wheels contain proprietary synthetic Cubitron - one of the hardest, longest lasting abrasives available.
Cubitron particles are somewhat less sharp than aluminum oxide, but they are harder and wear down more slowly.
They are especially suitable for high heat applications such as working on tough metal substrates - like stainless steel or cold rolled steel.
With a bonded construction, the abrasive is distributed throughout the structure - not just on the surface - for longer useful life.
These flexible wheels have a standard 7/8" center hole and require the use of a clear plastic back-up pad for safety and support.
A traditional retainer nut is also needed.
Use MMM 51046 Flexible Grinding Wheel Backup Pad, 3-3/8" x 7/8"; see Related Products, below.
Can be used on a wide variety of metals
These flexible wheels produce less vibration and noise than standard wheels
Do not use on tools without guards
Priced and sold by the each
These flexible wheels are also available with a built-in spin-on hub for 5/8"-11 thread - for quick disc changes.
The substantial spin-on hub provides support for the wheel, so an additional back-up pad is not necessary; see Related Products.