400159-1 Assembly - Wheel/Block/Axle Wheel, block, and axle assembly for a PF396 agitator within the PC4200 incubator. 2 are required per machine. This includes 2 wheels and 1 shaft. $538.92 Quantity Product Model Number Product Serial Number In order to purchase this item, please provide the product number and serial number of a compatible product. A table of compatible models and corresponding serial numbers can be found below.