Vortex Indexable U-Drill - 4xD - SPMG/SPKX - 41mmMeet the Vortex Indexable U Drilla versatile general purpose drilling solution designed for shops working with steel, stainless steel, cast iron, exotics, and non ferrous materials. It uses the SPMG SPKX insert family and features internal through coolant for efficient chip evacuation and consistent hole quality. Diameter: 41 mm Depth rating: 4xD maximum drill depth Insert compatibility: Uses SPMG or SPKX ISO inserts Coolant: Internal through coolant