This machine is a Winnona VR 1000 and its in very good condition,Its just to big for my shop.this grinder uses 12" wheels both for the valve face and stem and is capable of grinding very large valves.the valves are held by an automatic air operated collett and not a ball chuck so its very accurate,this would be a great machine for a production shop.I paid $10,000.00 for this machine 7 years ago and will sell it for $5000.00 OBO.It includes collets.Bill 828-286-0780