These Torx hex bits are specially heat-treated for durability when used with
impact drivers such as the Festool TI 15 Hybrid Drill Driver (45010, sold
). They are composed of the finest materials, so you get proper fit,
reduced runout, and an incredibly long life. They can be used with standard
bit holders and chucks, and are also compatible with the Festool Centrotec bit
holder for the fastest possible bit changes. Sold in packs of 5.