Dremel grinding wheels?

With the Dremel are three different colours of grinding wheels, white, green and a sort of pinky-brown.

Does anyone here know what each colour is used for?

TIA

Reply to
gareth evans
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Someone once told me that the blue-grey ones were for very hard materials. When I tried they crumbled though, maybe my technique was bad.

Peter F

Reply to
Peter Fairbrother

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