Bosch Expert SelfCut Speed spade bit in 13mm x 152mm. Self-feeding screw tip pulls the bit in cleanly, wave-cut flutes clear chips fast. Hex shank fits standard drill drivers. One bit per pack.
The Bosch Expert SelfCut Speed is a 13mm spade bit built specifically for fast, clean hole-boring in timber. If you’ve ever had a cheap flat bit spin out, clog up, or wander off-centre before it’s even through the first face, you’ll appreciate what Bosch has done here. The bosch spade bit 13mm format is one of the most common sizes on site — cable runs, pipe notches, joist work — and this bit handles all of it without the usual faff.
The standout feature is the self-feeding screw tip, part of Bosch’s own Tip Technology. It bites into the wood and draws the bit forward under its own drive, which means you’re not leaning into the drill to force progress. Less pressure on your wrist, less chance of the bit skipping across the grain. It’s a small thing that makes a noticeable difference over a long day of repetitive drilling.
How the Bosch Expert SelfCut Speed Performs in Practice
The wave-shaped cutting edges are what keep this bit moving at pace. That profile creates a shearing action rather than a straight scrape, and it throws chips clear of the hole rather than packing them in. In solid timber or engineered board, that means far less stopping to clear the flutes — which, if you’re drilling fifty holes in a stud wall, matters more than any spec sheet will tell you.
The 1/4 inch hex shank is the practical bit. It drops straight into a quick-change drill driver chuck without needing an adapter, and it won’t round out under torque the way a round-shank bit can in a worn chuck. At 152mm total length, there’s enough reach for most standard joist and stud applications without needing an extension.
This is a solid choice for electricians first-fixing cable runs, joiners cutting service holes, and carpenters working in timber frame. The bosch spade bit 13mm is a size you’ll reach for constantly, and having a bit that actually performs at this diameter makes the whole job cleaner and quicker.
Pro Tip: When using the self-feeding tip, let the thread do the pulling and resist the urge to force-feed the drill — too much downward pressure actually slows the cut and can cause the bit to walk sideways in softer timber.
Spade bits at 13mm are a staple for electricians running cable through timber joists and stud walls, and for joiners making service penetrations in floors and ceilings. The 152mm length gives enough reach through standard stud depths without needing an extension bar. Carpenters and installers use this size regularly for door hardware prep, pipe sleeves, and general timber boring where a hole saw would be overkill.
Best For
Cable runs through joists and studs
Pipe penetrations in timber
Door and furniture hardware prep
General timber boring on site
Compatible With
Three-jaw drill driver chucks
Quick-change hex chuck systems
Standard 1/4 inch hex collets
Cordless and mains drill drivers
Key Specifications
Diameter: 13mm
Total length: 152mm
Shank: 1/4 inch hex
Self-feeding screw tip
Wave-cut flute design
Not suitable for: Not suitable for use in masonry, metal, or composite materials. Not recommended for use in a standard round-shank-only chuck without a hex adapter fitted.
Fit the hex shank directly into a quick-change chuck or three-jaw chuck and tighten fully. Position the screw tip on your marked centre point and start at low speed to let the tip bite in cleanly before increasing to full drilling speed. Allow the self-feeding action to pull the bit through without forcing additional pressure.
Clear the hole periodically if drilling through thick or laminated timber, as chip buildup can slow the cut even with the wave flutes clearing well. Back the bit out and re-enter rather than stalling under load.
Mark the centre of your hole clearly on the timber surface
Insert the 1/4 inch hex shank into the drill chuck and secure it properly
Position the screw tip on the centre mark and apply light pressure to start
Increase drill speed once the tip has bitten and is pulling the bit forward
Let the self-feeding thread do the work — avoid forcing the drill
Back out occasionally on deep cuts to clear chips and reduce heat buildup
Break through the far face at reduced speed to avoid tearout on the exit side
Will this spade bit fit a standard cordless drill driver?
Yes. The 1/4 inch hex shank fits directly into any standard quick-change chuck or three-jaw drill driver chuck. No adapters needed for the vast majority of cordless drill drivers on site.
What is the self-feeding tip and does it actually make a difference?
The screw tip threads into the timber as you drill, pulling the bit forward rather than relying on you to push. In practice it means less effort, better centre tracking, and a noticeably faster cut — particularly useful when you're boring a lot of holes in a session.
Can this bit be used on MDF or engineered timber products?
It will cut through MDF and engineered board, though spade bits are generally better suited to solid timber. In dense engineered products, chip clearance can be an issue, so backing out to clear the flutes periodically will help keep the cut clean.
The Bosch Expert SelfCut Speed is manufactured from high-quality steel with a precision-ground wave cutting profile. The self-feeding screw tip is machined to pull consistently under load without stripping in varying timber densities. The 1/4 inch hex shank provides positive engagement in quick-change systems and resists rotation under high-torque drilling. Total length of 152mm suits standard first-fix boring applications without an extension.
Diameter
13mm
Total Length
152mm
Shank Type
1/4 inch hex
Shank Diameter
6.35mm (1/4 inch)
Tip Type
Self-feeding screw tip
Material
High-quality steel
Quantity
1
SKU
BOS-2608900313
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