The Printek Paper Drive Gear/Pulley, rear, is a repair part for the PrintMaster narrow carriage Dot Matrix Printer models 860, 862, 850, 850si and 852si.
The same Printek Drive Gear/Pulley, bottom, is a repair part for the PrintMaster narrow carriage Dot Matrix Printer model 862 and 852si.
The FormsPro 4600, 4603, 4003 and 4503 wide carriage Dot Matrix Printers also use this Printek Paper Drive Gear/Pulley.