The Tormek SG-200 Original Grindstone fits the Tormek T-4 and all earlier machine models with a grinding wheel 200 mm (7 7/8″) in diameter. Also known as Tormek SuperGrind®, it’s been developed over the years to combine efficient sharpening and a fine surface finish with a long service life. The more compact dimensions are adapted to our more compact machines for anyone with limited space or those who need to easily transport their Tormek. The SG-200 Original Grindstone is supplied as standard with the Tormek T-4 Original and Tormek T-4 Bushcraft.