The Tormek SG-250 Original Grindstone fits the Tormek T-8 and all earlier machine models with a grinding wheel 250 mm (9.84″) in diameter. Also known as Tormek SuperGrind®, it’s been developed to combine efficient sharpening and a fine surface finish with long lifespan. The SG-250 Original Grindstone is supplied as standard with the Tormek T-8 Original.