The Essential Barber Comb Guide: Allegro Combs #400, #415, #420, and #450
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| Model | Size & Thickness | Back / Corner Style | Flexibility | Best For | Colors Available | Key Advantage |
|---|---|---|---|---|---|---|
| Allegro Combs #400 | 7" x 1" / 0.023" | Rounded back & corners | Semi-flex | Clipper & scissor over comb, fading, parting | 10+ | Classic barber comb used by generations; versatile and durable |
| 7" x 1" / 0.026" | Rounded back & corners | Stiff (least flexible) | Thick & curly hair, heavy-duty cutting | 6+ | Strongest and sturdiest comb in the collection | |
| Allegro Combs #420 | 7" x 1" / 0.024" | Square back & corners | Semi-flex | Parting, braiding, precise barbering | 12+ | Best-seller; balanced durability and precision |
| Allegro Combs #450 | 7" x 1" (tapered to 0.5") / 0.020" | Rounded back & corners | Very flexible | Fades, detail work, locs & twists | 8+ | Unique tapered design; excellent for textured styling |

When it comes to professional barbering, the right comb is more than a tool — it’s a tradition, a companion, and in many cases, the very instrument barbers have trusted for decades.
At Allegro Combs, our collection of professional barber combs is proudly Made in the USA and designed with the perfect balance of durability, flexibility, and style.
In this post, we’ll break down four of our most iconic 7-inch barber combs: Allegro Combs #400, Allegro Combs #415, Allegro Combs #420, and Allegro Combs #450.
Allegro Combs #400 – The Traditional Barber’s Classic
The Allegro Combs #400 has trained generations of barbers. If your father or grandfather worked behind the chair, chances are this was one of the first combs they held in their hand.
- Specs: 7" x 1", thickness 0.023". Made of nitrile rubber (a professional plastic, not actual rubber).
- Design: Rounded back and corners, glossy finish, dual fine and wide teeth. Marked with inches for precision cutting.
- Durability: Resistant to all salon chemicals, sturdy enough to last through a full year of daily cutting. Not heat-resistant.
- Performance: Semi-flexible, making it ideal for clipper-over-comb, scissor-over-comb, fading, and parting on all hair types.
- Why Barbers Love It: Sold in protective 12-pack cases, long-lasting, not brittle, and scissor-friendly. Available in 10+ colors.
- Customer Feedback: Robbie from Chicago, with 10 years of experience, says: “These combs are sturdy, thick, and worth the price. I keep extras so I can switch for every client, and the colors are cool too.”
What makes it unique: Tradition, versatility, and a wide color selection. This comb is the reliable classic that never goes out of style.
Allegro Combs #415 – The Sturdiest of Them All
For barbers who prefer a strong, no-flex comb, the Allegro Combs #415 is the thickest and most rigid in our line.
- Specs: 7" x 1", thickness 0.026". Made of nitrile rubber plastic.
- Design: Rounded back and corners, glossy finish, dual fine and wide teeth. Marked with inches for accuracy.
- Durability: Our strongest cutting comb, recommended for thick or curly hair. Resistant to all chemicals, long-lasting.
- Performance: Stiff, providing maximum control for clipper-over-comb and scissor-over-comb cutting.
- Why Barbers Love It: Available in 6 colors, including purple, light pink, and black. Packaged in protective 12-pack cases.
- Customer Feedback: Max from Salt Lake City shares: “I accidentally bought these instead of my usual #420, but they lasted even longer. Very durable, great for personal use too.”
What makes it unique: Maximum sturdiness, reliability, and a range of bold color options. Perfect if you don’t like flexible combs.
Allegro Combs #420 – The Barber’s Best Seller
The #420 model is our best seller and has become the go-to choice for countless barbershops and cosmetology schools.
- Specs: 7" x 1", thickness 0.024". Made of nitrile rubber plastic.
- Design: Square corners and back for clean lines, glossy finish, dual fine and wide teeth. Precision inch markings.
- Durability: Strong, chemical-resistant, designed to withstand daily professional use.
- Performance: Semi-flexible, giving barbers the right balance of control and adaptability. Great for parting, braiding, and detail work in addition to classic cutting.
- Why Barbers Love It: Offered in 12+ colors, protective 12-pack cases, trusted by schools and pros nationwide.
- Customer Feedback: Sarah from Dallas says: “These combs are thick and sturdy but flex just enough. They glide through knots with ease and last far longer than cheap combs. I even gave extras to my relatives.”
What makes it unique: Its square edges make it precise, while its popularity proves it’s a trusted professional standard.

Allegro Combs #450 – The Flexible Tapered Specialist
The Allegro Combs #450 stands apart as a tapered barber comb, offering unique flexibility for detail work, styling, and textured cuts.
- Specs: 7" x 1" on one side, tapering to 0.5" on the other. Thickness 0.020". Made of nitrile rubber plastic.
- Design: Rounded back and corners, glossy finish, dual fine and wide teeth, inch-marked for accuracy.
- Durability: Very flexible, strong enough for professional use while remaining bendable for fades, twists, and loc care.
- Performance: Ideal for clipper-over-comb, scissor-over-comb, fading, parting, and especially locs, twists, and detangling.
- Why Barbers Love It: Available in 8+ colors, packaged in protective 12-packs, and trusted by stylists who need flexibility.
- Customer Feedback: Carlton from Miami says: “As someone who does locs, I can say these are great combs! Very sturdy, easy to clean, and cute too.”
What makes it unique: The flexibility and tapered design make it a favorite for barbers specializing in detail work, fades, and textured hairstyles.
Why Allegro Combs?
All four models — Allegro Combs #400, Allegro Combs #415, Allegro Combs #420, and Allegro Combs #450 — share the same DNA:
- Made in the USA with professional-grade nitrile rubber plastic.
- Resistant to chemicals, disinfectants, and daily wear.
- Trusted by barber schools, salons, and professionals nationwide.
- Offered in multiple colors and eco-friendly packaging.
Whether you’re a seasoned barber, a student, or simply someone who values professional tools at home, there’s an Allegro Comb designed for your style.



