Wheels for Bench Grinders
This range of Grinding wheels from Kinik comes in a range of materials and sizes. Most bench grinders arrive prefited with grey carborundum wheels, it is strongly recommended that you replace at least one of these with a higher quality stone for sharpening and general grinding.
White stones are suitable for most tool sharpening and are the one most likely to suit your needs, the White wheels have low heating properties
Pink wheels are slightly harder than the white they can be considered as largely interchangeable although the pink is suitable if you also want to sharpen drill bits Green Silicon Cabide wheels are the hardest, suitable for sharpening of hard steels but also for drill bit sharpening and for sharpening carbide tipped tools commonly used in turning and if you intend to do this get this wheel as it will do everything, all be it it is slightly less suitable for chisel sharpening as it generates more heat and abrades slower, current stock of 8" pink wheels is made by Weiler.
without a bush the stones will fit a 1 1/4" spindle.