Andis Carbon-Infused UltraEdge Size-40 Blade - Precise 1/100 in Cut

In this review the Andis UltraEdge Size-40 blade is assessed for pet groomers and veterinary techs who need a razor-precise, surgical-grade cutting edge. The bottom line: this blade is best for detailed face, feet and tail work where a 1/100 in cut length and a reliably sharp edge matter most. The reviewer found the carbon-infused steel and heat treatment deliver a noticeably keen edge that holds through multiple uses, and the blade's fit with common detachable clippers makes it a practical replacement for professionals and serious home groomers.

Key Features

• Carbon-infused heat treatment: Adds carbon to the cutting edge to keep the blade sharper longer and extend service life under regular use.
• Surgical stainless steel construction: Built from high-carbon surgical steel so the blade resists corrosion and suits grooming around sensitive areas.
• Size-40, 1/100 in cut length: Provides an extremely close, precision cut ideal for face, feet and tail trimming on show poodles or detailed work.
• High hardness rating: A Rockwell hardness near 65 means the cutting edge tolerates more sharpenings and consistent cutting performance.
• Wide compatibility: Works with most detachable-style clippers from major makes so it can replace worn blades without changing equipment.

Who It's For

The UltraEdge Size-40 is aimed at professional groomers, veterinarians and meticulous home groomers who need a surgical-level, very close cut for small areas and touch-ups. Its 1/100 in length and sharp edge are particularly useful for finishing around eyes, paws and tails where precision and a clean finish matter.

Those who should look elsewhere include users who want a longer all-over trim or an adjustable blade for variable lengths; this blade is specialized for ultra-close, detailed work rather than bulk clipping. If durability in heavy continuous bulk clipping is the top priority, consider a blade sized for wider cutting lengths.

Pros & Cons

Pros

• Exceptional sharpness from the carbonized heat treatment makes precision cuts easier and faster.
• Made from surgical-grade stainless steel so it cleans easily and suits sensitive areas.
• High hardness rating allows more sharpening cycles without losing edge geometry.
• Compatible with many detachable clippers, simplifying upgrades or replacements.

Cons

• Very short 1/100 in cut length is too close for general trimming and not intended for bulk coat removal.
• Some customers reported mixed impressions of fit and long-term durability depending on clipping style and maintenance.

Specifications

Brand	Andis
Blade model	UltraEdge Size-40
Cut length	1/100 in
Material	Carbon-infused surgical stainless steel
Rockwell hardness	Approximately 65
Compatibility	Detachable-style clippers from major makers (Andis, Conair, Oster, Wahl)

Our Verdict

The Andis UltraEdge Size-40 is a specialist blade that delivers a surgical-level, ultra-close cut and holds a razor edge thanks to carbonizing heat treatment. It is good value for groomers and vets who need precision trimming around faces, feet and tails, though it is not intended for all-over coat removal or those who require variable length options.

Frequently Asked Questions

Will this blade fit my detachable clipper?
It fits most detachable-style clippers from major brands and is designed for common Andis detachable models, as well as many Conair, Oster and Wahl clippers.

How close does the Size-40 cut?
The Size-40 provides a very close 1/100 in cut, suitable for finishing work around eyes, paws and tails rather than bulk trimming.

Is the blade easy to clean and sharpen?
Yes, the surgical stainless steel cleans readily and its higher hardness rating supports multiple sharpenings without quickly losing edge geometry.