The record power rsbg6 6quot bench grinder with 40mm whitestone features both adjustable spark guards and tool rests there is a cast body that reduces vibration throughout the unit and gives the user smooth operation for accurate sharpening there are rubber feet that also dampen vibrations whilst making sure the grinder stays secure during operation there is a 40mm whitestone that is ideal for giving tools a fine finish ideal for hss turning tools the second coarse greystone is perfect