For sale is a TOOL POST GRINDER FOR PRECISE PRODUCTS STRAIGHT GRINDER. Stick your "precise product" straioght grinder into the hole, and instantly get a tool post grinder, ID grinder etc for your personal lathe. Big hole ID is 2.117 approximately. Small hole ID is appx 0.837 inch. Rise over the table is approx. 1.584. Precise Products M3703.