Wahl Competition Series Blade, Size 4F

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At a Glance

  • Stainless Steel
  • Metal
  • All Lifestages
  • Small Breeds
  • Medium Breeds
  • Large Breeds

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About This Item

Details

  • Proudly made in the USA.
  • Comes with one #4F full extra course detachable blade that’s 8mm (5/16”).
  • Delivers a smooth, show-quality cut.
  • Available in 17 sizes and styles (sold separately) to achieve your desired look.
  • Designed to fit Wahl's KM2, KM5, KM10, KM Cordless, PowerGrip, SS Pro, Stable Pro Plus, and XBlock clippers; also compatible with most Oster and Andis detachable-style clippers.

Instructions

Shampoos, Wipes, and Paw Care

Wahl grooming essentials are made with gentle, plant-derived ingredients that work hard without harsh chemicals. Our shampoos include specialized formulas like Oatmeal for soothing sensitive skin, Puppy for delicate coats, and Odor Control for a long-lasting fresh clean. For in-between baths, our wipes, waterless shampoos, and paw care solutions keep pets clean and refreshed.

Healthy Pets, Confident Grooming

At Wahl, we believe pets are family—and family deserves the very best. Wahl has been serving professional vets and groomers for over 50 years, and our experience shows in every product we make. From shampoos to clippers, every Wahl tool and formula is designed to keep pets healthy, comfortable, and looking their best.

Clipping and Trimming

Wahl has been trusted by groomers and pet parents for generations, beginning with the invention of the first practical electric clipper in 1919. Our clippers and trimmers are built for durability and designed for comfort and ease of use at home. Whether you’re shaping, trimming, or tackling full grooms, Wahl tools deliver the precision and reliability you need to keep your pet looking their best.

Nail Care

Healthy nails are essential for your pet’s comfort and mobility. Wahl nail grinders are designed with safety guards, quiet motors, and ergonomic grips to make grooming stress-free for both pets and owners. With Wahl nail care, you can confidently keep paws healthy and nails neat.

About Wahl

Wahl Clipper has been the leader in the professional and home grooming category since 1919 with the invention of the first practical electric hair clipper. Today, we promise to make tools that are tough enough to handle any job, giving you the best performance and experience possible.

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Questions & Answers

2 Customer Questions

is this a clip on blade

Answer by Chewy • Oct 24, 2021
This is a detachable blade compatible with Wahl’s KM10, KM5, KM2, KM2 Deluxe, KM Cordless, Power Grip, SS-Pro, and Stable Pro Plus clippers.

Is this blade compatible with the andis ag 2 speed?

Answer by Chewy • Jan 20, 2022
This blade is compatible with the Wahl KM10, KM5, KM2, KM2 Deluxe, Power Grip, SS-Pro, and Stable Pro Plus clippers.
Reviews
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4.0
Rated 4 out of 5 stars
27 Ratings
Terms & Conditions

6 Customer Reviews

Rated 5 out of 5 stars
By Caitlyn on Oct 29, 2025

Watch the sizing

The sizing runs a bit small, my dog was in the middle of the sizing for small but the wraps are a bit small but still fit. If its in question go a size up.

The sizing runs a bit small, my dog was in the middle of the sizing for small but the wraps are a bit small but still fit. If its in question go a size up.

Rated 5 out of 5 stars
By Kathleen on Jul 6, 2025

Smooth as Butter!

I've been trying to cut my doodle's hair using a #10 and attachments but it kept getting clogged. Then I realized that there were blades with different lengths so

I've been trying to cut my doodle's hair using a #10 and attachments but it kept getting clogged. Then I realized that there were blades with different lengths so I bought 2 sizes and it cut through his hair like a dream! I'm a DIY home groomer.

Rated 5 out of 5 stars
By Rose on Apr 25, 2025

WAHL Blade size 4F

I have an older Schnauzer with fatty tumors on his chest makes it hard to trim his chest. This blade worked well on his chest and legs

I have an older Schnauzer with fatty tumors on his chest makes it hard to trim his chest. This blade worked well on his chest and legs

Rated 1 out of 5 stars
By Sandra on Oct 28, 2024

ABSOLUTLY WORTHLESS FOR A thick coated Bernedoodle. Trash. worthless.

it won't cut the hair of a Bernedoodle.

it won't cut the hair of a Bernedoodle.

Rated 5 out of 5 stars
By Guru on Jan 25, 2021

Great tool for a tough job ahead

You need this as it preforms better than stock and runs more quiet. Clips hair like butter and i have a very thick hair Goldendoodle. Used with the Whal- KM-10

You need this as it preforms better than stock and runs more quiet. Clips hair like butter and i have a very thick hair Goldendoodle. Used with the Whal- KM-10 tho

Rated 5 out of 5 stars
By Gracie on Aug 10, 2020

Great blade

Love this blade, haven’t used it yet but when I do it’s a excellent cut

Love this blade, haven’t used it yet but when I do it’s a excellent cut