Key Features
Drill Straight AnywhereThe Festool MB 40 Mobile Drilling Attachment Set keeps your drill at a true 90 degrees so you can make clean, repeatable holes without dragging material to a drill press. Dial In DepthThe readable depth scale with zero position lets you set drilling depth up to 2 inches. That matters when shelf pins, hinge cups, and repeated hardware holes need to match. Cleaner Layout LinesDust extraction connects right at the base, helping keep chips out of the way so you can actually see your mark while drilling in wood, metal, or plastic.
Overview
Festool MB 40 Mobile Drilling Attachment Set is a mobile drilling attachment built to turn compatible Festool cordless drills into a more accurate drilling setup for jobsite and shop work. This is a drilling attachment designed for straight, controlled 90-degree drilling. Model Number 577971. If you need cleaner alignment for cabinet hardware, shelf pin rows, end-grain boring, or repeat holes in panels, this setup gives you much better control than freehand drilling.
The big reason this attachment matters is repeatability. The MB 40 is built for boring holes at a right angle, and it does that with a stable guide column layout, clear base markings, and a depth stop with a readable scale. Festool rates the depth stop setting range from 0 to 2 inches, with markings in both inches and millimeters. On real work, that means less guessing, fewer blown-through parts, and better consistency when you’re drilling for fittings, shelf supports, or hardware that needs to line up across multiple parts.
It is also a more flexible setup than a fixed bench tool. The MB 40 is meant to bring precision to the workpiece instead of forcing you to bring every part back to the shop. That matters for kitchen installation, furniture building, assembly work, and field adjustments where full-size panels, installed casework, or vertical surfaces are not practical to move. Festool also includes accessories that widen what this drilling guide can do, including a side fence, end stop components, hole series pins, and a guide rail adapter for longer or wider workpieces.
Festool built this one around practical control features instead of gimmicks. The rubberized base helps the attachment stay planted while you start the hole. The base plate markings help with positioning. The stroke is 7-3/8 inches with depth stop and spring, or 8 inches without depth stop and without spring, so you have room to work on different drilling tasks. Maximum drilling capacity is listed at 1-9/16 inches in softwood with a Forstner bit and 5/8 inch in softwood with an auger bit, which covers a lot of common cabinet, furniture, and light installation work.
Dust collection is another smart part of the design. The base accepts a 1-1/16 inch, or 27 millimeter, dust extraction connection. Hooked to a compatible extractor and hose, the attachment helps clear chips from the drilling point so you can keep the mark in view and reduce cleanup. That is especially useful when drilling rows of holes or working inside finished spaces where sawdust and chips create extra mess fast.
On the system side, the MB 40 uses the FastFix holder interface and is intended for compatible Festool cordless drills. Festool specifically lists it for CXS/TXS 12, CXS/TXS 18, TPC 18/4, TDC 18/4, C 18, and T 18 models with FastFix holder. The tool chuck fits quickly without extra tools, and CENTROTEC compatibility helps speed up bit changes when you’re moving between pilot holes, hardware holes, and final fit-up work.
Who is this for? Cabinet installers, finish carpenters, furniture builders, remodelers, and serious DIY users who care about drilling accuracy more than brute force. If your work involves hardware placement, shelf pin systems, hinge cups, edge drilling, or repeat drilling in panels, the Festool MB 40 Mobile Drilling Attachment Set solves a real problem. If you only drill rough holes in framing lumber once in a while, it is probably more tool than you need. But if precision is the job, this attachment earns its spot.
Accurate Hole Placement on Panels and Edges
When shelf pins, hardware holes, or cabinet fittings need to land exactly where you planned them, this attachment gives your drill a guided path instead of leaving everything to hand pressure and eye judgment.
- Designed for 90-degree drilling with repeatable positioning
- Base plate markings help line the attachment up on the workpiece
- Supports 32 millimeter hole series work for cabinet and furniture layouts
Controlled Drilling Depth Without Guesswork
The built-in depth adjustment is a big deal when you need consistent blind holes. Set it once, drill the run, and move on without checking every hole by eye.
- Depth stop range: 0 to 2 inches, or 0 to 50 millimeters
- Readable scale includes both inches and millimeters
- Zero position helps fine-tune repeat settings
Bring Precision to Installed Work
This is where a mobile drilling attachment makes sense. You can drill straight into vertical or awkward workpieces on site instead of trying to fake a square start with a bare drill.
- Useful for end-face holes, assembly work, and kitchen installations
- Rubberized base helps reduce slipping at startup
- Compact format is easier to carry than a stationary drill press setup
What’s in the Box
- (1) FSA-MB 40 Guide Rail Adapter
- (1) PA-MB 40 Stop Set
- (1) 5 mm Hole Series Pin
- (1) 3 mm Hole Series Pin
- (1) TX 15 Key
- (1) Systainer3 SYS3 M 187
Key Specifications
| Holder | FastFix |
|---|---|
| Weight (lbs) | 3.1 lbs |
| Dust Extraction Connection Diameter | 1-1/16 in (27 mm) |
| Height | 12-1/4 in (312 mm) |
| Base Size | 4-3/8 x 4-1/2 in (110 x 114 mm) |
| Depth Stop Setting Range | 0 – 2 in (0 – 50 mm) |
| Stroke with Depth Stop | 7-3/8 in (187 mm) |
| Max. Forstner Bit Diameter in Softwood | 1-9/16 in (40 mm) |
Compatibility
Tool InterfaceUses the Festool FastFix holder system. Compatible Drill ModelsDesigned for Festool CXS/TXS 12, CXS/TXS 18, TPC 18/4, TDC 18/4, C 18, and T 18 with FastFix holder. Dust ExtractionFits a 27 millimeter dust extraction connection and is intended for use with Festool D27 hose setups. Bit ChangesCENTROTEC compatibility supports quick insertion and replacement of drilling tools.
Built For
Cabinet Installation Furniture Building Woodworking Remodeling Assembly Work Shelf Pin Drilling Cup Hinge Holes System 32 Hole Series
Pro Tip
If you’re laying out cabinet hardware or shelf pin runs, set the depth stop first and use the hole series pins instead of remarking every location. That is the fastest way to get matching holes across multiple parts with the MB 40.
Tool Nut’s Take
Tool Nut’s Take
Festool MB 40 Mobile Drilling Attachment Set is for guys who are tired of freehand guessing
This is a smart add-on for anyone who wants drill-press-style control without being stuck at a bench.
- Who it’s for: Cabinet installers, finish carpenters, furniture builders, and detail-focused DIY users doing hardware, shelf pin, and fitting holes.
- Why it stands out: True 90-degree guidance, usable depth control, System 32 capability, and dust extraction right at the base make it more than just a simple drill guide.
- Worth knowing: This is a precision accessory, not a universal fit attachment. Make sure your Festool drill uses the FastFix holder system before you buy.
Common Questions
- What kind of holes is this attachment made for? It is built for accurate 90-degree drilling, end-face holes, hole series work in the 32 millimeter system, cup hinge holes, shelf support holes, and general drilling in wood, metal, and plastic.
- How much depth adjustment does it have? The depth stop adjusts from 0 to 2 inches, or 0 to 50 millimeters, and includes a readable scale with zero position.
- Does it support dust extraction? Yes. It has a 1-1/16 inch, or 27 millimeter, dust extraction connection and is intended for use with a D27 hose setup.
- What is the maximum drilling diameter in softwood? Festool lists a maximum of 1-9/16 inches with a Forstner bit and 5/8 inch with an auger bit in softwood.
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