Set of two thrust bearings for key machine clamp handles. Thrust bearing allow you to tighten and release your vise jaws without over-clamping. Fits most key machines including the HPC Automate, HOC Blitz, HPC CodeMax, HPC Extreme Blitz, HPC Switch Blitz, HPC Trace-a-Key, HPC 9120RM, HPC 9160MC, HPC 9180MC.