Check the listing for details. Worm / Feed Screw Assembly, #22 Oval Head, Fitting Hobart Grinder 4822, 4822CE. Condition: New. Listed at 220.00 USD. Fits Model(s): 4822, 4822CE. Includes: One Worm Assembly inludes the following: Worm (H524), Worm Drive Shaft (H531), Fiber Washer (GR33), Feed Screw (H508).