b'Indexable & Inserted DrillsIndexable drills feature a tool steel body, and typically two inserts: a CENTER INSERT that cuts the center of the hole, and a PERIPHERY INSERT that cuts the outside hole diameter. Inserts are usually secured to the tool body using screws, and when the cutting edge becomes dull, the insert is indexed to expose a new cutting edge.Indexable Drill BodiesFEATURES: APPLICATIONS:High penetration rates and lower chip friction Medium- and large-diameter holesLess accurate than solid carbide Medium tolerance demandsHigher initial cost, but lower long-term costs Blind holes requiring a flat bottomAvailable in larger diameters than solid drills Plunge drilling operations Inserts can be changed without removing the tool from the holderNOTE: Indexable drill bodies require BOTH periphery and center inserts. The styles are NOT interchangeable. Remember to order both periphery and center inserts.HA Chip Groove HL Chip Groove HP Chip Groove Explore NowNPMSPK HM Chip Groove PRIMARY WORKPIECE MATERIAL SECONDARY WORKPIECE MATERIAL PMK Receive Free Express Delivery with Winners Circle| 31'