The Festool 577779 18-Piece Drill and Driver Bit Cassette BKS SYS3 D3-8 K CE/W F is a compact drill and driver bit set for wood drilling and everyday fastening tasks. This is a drill and driver bit cassette designed for drilling in wood-based materials and handling common fastening work with Festool cordless drills. Model Number 577779. If you use a Festool drill with the CENTROTEC interface, this set gives you a clean, organized mix of short wood drill bits and driver bits in one case that is built around the way Festool users actually store and carry accessories.

On the drilling side, the set includes short spiral wood drill bits in 3 mm, 4 mm, 5 mm, 5 mm, 6 mm, and 8 mm sizes. Festool uses a centering point and two cutters on these bits, which helps the bit start where you want it and cut a cleaner hole with less wandering. That is especially useful when you are working on visible trim, cabinet parts, laminated sheet goods, or acrylic where sloppy starts show up fast.

The bit material matters here too. Festool specifies high-alloy ball bearing steel for the drill bits, and the two-chamfer design is intended to extend service life, even in laminated chipboard. In plain terms, this is not just a throw-in assortment built around filler pieces. It is a focused set for users who need small-diameter drilling performance that stays consistent across furniture work, finish carpentry, shop builds, and punch-list jobs.

This cassette also covers the driver bits you reach for most: Phillips #1, Phillips #2, Phillips #3, Pozidriv #1, Pozidriv #2, Torx T15, Torx T20, Torx T25, Torx T30, Torx T40, Square #1, and Square #2. That mix makes sense for installers, cabinet crews, service techs, and remodelers who bounce between pilot holes and fastening without wanting to carry a full bulk organizer for every small task.

One of the real advantages of this Festool accessory set is its size. The drill bits are 2-9/16 inches long overall with a 1 inch spiral length, and the driver bits are 1 inch long. Festool specifically calls out the short format as ideal for use with angle attachments. If you work inside cabinets, near corners, between framing members, or around hardware where clearance disappears fast, shorter bits are not a minor detail. They are the difference between finishing the task with the right tool or improvising with the wrong one.

From an organization standpoint, the cassette is made to fit Systainer3 models with lid compartments, or it can be used as a standalone box. The drills and bits are held in movable modules, so the layout stays secure while still letting you adjust the setup. That is a practical feature, not a gimmick. Small accessories are easy to lose, and when they are mixed loose in a drawer, the bit you need is always the one missing. This layout keeps the sizes readable and the pieces separated.

Compatibility is another reason this set stands out. Festool lists it for cordless drills with the CENTROTEC interface when used in the WH-CE CENTROTEC tool chuck. That makes it a better fit for users already invested in the Festool drilling platform, especially if they want a light, compact setup that swaps between drilling and driving without a bunch of extra adapters or bulk.

Who should buy it? This set makes the most sense for Festool users doing finish carpentry, cabinet installation, woodworking, remodeling, and general jobsite service work. If you want a broad, all-metal drilling set for masonry or heavy steel, this is not that tool. But if your day is mostly wood, sheet goods, acrylic, pilot holes, hinge screws, hardware installation, and tight-access fastening, this cassette is dialed in for exactly that kind of work.

Festool 577779 18-Piece Drill and Driver Bit Cassette BKS SYS3 D3-8 K CE/W F is a smart add-on for the Festool drill user who hates clutter

This is the kind of set that earns its keep by covering the small, everyday jobs cleanly and keeping the bits where they belong.

• Who it's for: Festool users doing cabinets, trim, punch work, shop builds, and general wood drilling and fastening.
• Why it stands out: The short wood bits, practical driver bit mix, CENTROTEC compatibility, and Systainer3-ready storage make it feel like part of a system instead of a random accessory pack.
• Worth knowing: This is a focused wood and install set, not a catch-all assortment for every material, and the Systainer itself is not included.

• What materials is this set designed to drill? Festool lists it for wood, glued solid wood, MDF, and acrylic glass.
• Will this work with Festool CENTROTEC drills? Yes. Festool specifies compatibility with Festool cordless drills that use the CENTROTEC interface when used in the WH-CE CENTROTEC tool chuck.
• Why are the drill bits so short? The short size is intentional and is especially useful when working with angle attachments or in places where a longer bit would be awkward.
• Does the cassette fit in a Festool Systainer3? Yes. It is designed to fit Systainer3 models with lid compartments.