Center and spotting drills are used to create a conical hole for a lathe center, providing a precise starting point for a standard twist drill and helping to prevent the twist drill from walking. Key benefits - Provides a defined conical seat for lathe centers, improving alignment during turning. - Establishes a reliable starting point for standard twist drills, reducing drill wandering. - Improves hole position accuracy and concentricity with minimal rework. Function and compatibility - Designed to work with lathe centers and standard twist drills. - Suitable for center drilling and spotting applications in metalworking and machining setups. Performance and attributes - Delivers consistent conical geometry to ensure reliable drill starts. - Supports efficient setup and predictable drilling results in typical workshop operations. Use scenarios - Lathe setup: Prepare a workpiece for turning by boring a conical recess that accepts the lathe center, then proceed with the twist drill to establish the hole. - Precise hole starting: Spot a pilot conical recess on a metal bar to guide the twist drill and prevent walking at the intended hole location. - Alignment prep for long workpieces: Create a conical receptacle for the lathe center on long shafts or pins to maintain axis alignment during subsequent milling or turning operations.