Vortex Indexable U-Drill - 4xD - SPMG/SPKX - 18mmThe Vortex Indexable U Drill in 18 mm is a versatile, ready to use drilling solution designed for general purpose indexable drilling across a wide range of metals. It works with SPMG or SPKX ISO inserts and supports through coolant for clean, consistent hole quality. Drill diameter: 18 mm Maximum depth: 4xD drill depth Insert compatibility: Uses SPMG or SPKX ISO inserts Through coolant: Internal through coolant capabilities Holder options: Available