Clipper blades Checked against maker charts
The #50 clipper blade
Cut length
—(0.4 mm)
Wahl's official #50 leaves 0.4 mm — which is LONGER than Andis's #40 at 0.25 mm. The 'higher number = shorter cut' rule breaks down across brands at the surgical end. Oster also sells a #50 but publishes no official length.
Type
Close-cutting / surgical length
What the #50 is used for
- Wahl's closest detachable — 'a close, surgical cut' in Wahl's own words
- Vet and pre-surgical territory, not pet grooming
Which clippers it fits
#50 detachable blades use the A5 standard — they interchange across Andis, Oster, Wahl KM-series, and Heiniger A5-style clippers regardless of which brand made the blade. They do not fit 5-in-1 adjustable clippers (Wahl Bravura/Arco) or screw-on home clippers, which take their own blade systems.
Leaves more coat
#30 1/50"
Cuts closer
#40 1/100"
All blade sizes
FAQ
- Will a #50 blade fit my clipper?
- #50 detachable blades follow the A5 standard, so they interchange across A5-style clippers from Andis, Oster, Wahl (KM series), and Heiniger. They do not fit 5-in-1 adjustable-blade clippers (like the Wahl Bravura) or screw-on home clippers — those use their own blade systems.
- Is a #50 blade safe to use at home?
- Close-cutting blades heat up fast and can burn skin. Check blade temperature against your forearm every few minutes, use coolant spray, and keep this length away from thin-skinned areas unless you've been shown how. When in doubt, this is a job for a professional groomer.
Sources