48-89-4670 SHOCK WAVE Impact Duty™ RED HELIX™ Titanium Drill Bit Set 15PC OE MILWAUKEE® SHOCK WAVE Impact Duty M1 5PC RED HELIXT™ Titanium Drill Bit sets edginess for extreme durability and long life: The QUAD EDGE ™ tip delivers a precision start dod features four cutting edges to create smaller chips for faster material removal dnd less heat leading to improved performance Designed with a VARIABLE HELIX Rte that begin with an aggressive 851 helical gangland ends at 15 for rapid chip removal.