The bits in the Festool Stubby Drill Bit Cassette BKS SYS3 D3-8 K CE/W are designed for drilling in all types of wood, glued solid wood, MDF and acrylic glass. Their short size makes them ideal for use with angle attachments or getting into tight spaces. The set also includes a variety of commonly used driver bits. Drill bits are made from high-alloyed ball bearing steel with center point and two cutters for drilling quick and clean holes. They have 2 chamfers instead of pre-cutting blades for an extended useful life, even when cutting laminated chipboard. Bits have an overall length of approximately 60mm, and a drill length of approximately 25mm. Case fits perfectly into Systainer3 models with lid compartments. Set Includes: Short spiral (stubby) wood drill bits with centering point (one each 3, 4, 6, 8mm; and two 5mm); one each #1, 2, and 3 PH Bits; one each #1, 2, and 3 PZ Bits; and one each #10, 15, 20, 25, 30, and 40 TX bits; all in a sturdy closable plastic storage case with clear lid.