The Oster 78153-313-000 is a replacement shearing head for the Shearmaster equipment family. Listed as the 310C or EW310C head, it is a 3-inch assembly intended for use with four-point cutters. It provides the head component needed when servicing an existing shearing machine.

Match the full part number and the machine's service information before selecting a replacement. Head replacement is a service operation: Oster's Clipmaster, Shearmaster and Showmaster manual directs users to an authorized service center for work that requires separating the head from the motor housing. The head and its cutting components should be identified together when arranging the repair.