Centering and spotting drills Function These drills create a conical starting hole for a lathe center, establishing an accurate starting point for center operations and for machining between centers. Walk prevention Designed for use with standard twist drills to prevent walking at entry, improving hole location and reducing wandering. Applications Used to produce center holes or center seats in components or workpieces that require machining between centers. Material Speed Steel Benefits Improves the accuracy of center seating, reduces setup time, and provides reliable guidance for subsequent turning or drilling operations. Use scenarios 1) Preparing a shaft for betweencenters turning on a lathe, ensuring the center seats correctly. 2) Spotting a starting conical hole on a workpiece before drilling or reaming to maintain alignment. 3) Creating a center hold in a hub or bushing that will be machined between centers.