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Your cart is empty.Building Calluses is essential for playing a stringed instrument
Over 2 million new people start playing a stringed instrument each year. Twelve months later, 90% stop. The number one reason for stopping is pain from lack of calluses and finger strength. We designed the Fender Callus Builder and Finger Strengthener to help in both these areas.
Easily simulate the exact angle you play your instrument
Unlike most finger exercisers, the Fender Callus Builder can be held at different angles, allowing the user to exercise at the same angle that they play their instrument.
What Strength is Right for Me?
The Fender Callus Builder is available at two tensions, Red=8-lbs and Black=15-lbs. These tensions were measured by a force gauge applied between the first and second outer raised edges. If you move your fingers closer to the center, the tension increases. For example, if the User applies pressure between the third and fourth raised edges, the tension will be 50% higher. We are not aware of any other finger exerciser offering 15-lbs of tension, as well as the flexibility to increase the tensions to over 20-lbs by simply moving your fingers closer to the center. For beginners, the Red Perfect Pinch will suffice. As you strengthen and improve, it will be time for the Black Perfect Pinch. For experienced Musicians, and Bass players, you will want the Black Fender Callus Builder. We do offer a combo package at a discounted.
Jim A
Reviewed in the United States on March 24, 2025
Works as described. Good to have when away from guitar because of travel for several months.
カスタマー
Reviewed in Japan on January 5, 2025
タイトルは、おそらく誤解されてこれを買ってしまう方もしくは使ってしまう方向けへのメッセージですいくつかのレビューでばねの耐久力について言及されていますが、ハンドグリッパーのように開け閉めして使えばすぐ壊れるようなバネです。このツールの主な目的はカルス（硬質化した指先）の構築であって、指先に弦の形で圧がかかれば十分です。言い換えればバネなしで、この弦の形に成形されているプラスチックパーツを握りしめていれば良いはずですね。ただそれだと持ちにくいので、クリップの歯が浮くか浮かないかくらいの力で押していれば十分だと思います。Fenderロゴは許諾を得ていない疑惑はありつつも見た目もいいし満足しています
たけけん
Reviewed in Japan on January 5, 2025
アコースティックギターを弾いていると左手の指先が硬くなり演奏がしやすくなります。しかし１週間以上演奏しないと指先が徐々にもとの柔らかさに戻ってしまいます。この製品でトレーニングするとそれを予防できるようです。たしかにトレーニングを行った後はギターを弾いた後のような間隔が残ります。しかし、Fenderブランドなので仕方ないと思いますが、価格が高く感じられるので☆４つです。
Eric R. Janis
Reviewed in the United States on January 3, 2025
The 8 pound spring makes good pressure for working out the fingersThe ridges do a good job at building callusesNot sure what the magnet is for, since the magnet is not even strong enough to hold the product on the fridge. Even when it's not holding anything just the product itself, the magnet will not keep it on the fridge.
つちのこさいさい
Reviewed in Japan on January 12, 2025
デザインよい。バネ強さちょうど良い。磁石ついてるし、パックンだし失くさない、よい。ちょっと割れたり壊れたりしないかもねと思わせる作り。欲を言えばもう少し幅が欲しかったかな？でも大きければ携帯性が‥なので5。もう少しお安ければいいんだけど。
beezee
Reviewed in the United States on January 11, 2025
A great little tool to build calluses on the fret hand of the beginner guitar player. Also builds the muscles on the fret fingers and wrist. Its really very cool. Comes in 2 different pounds of pressure resistance.
Dave Bertrand
Reviewed in Canada on April 10, 2025
Too early to tell if it helps with calluses, but it's very decent as a squeeze exercise. Relaxed my hand and made it feel better as a bonus, similar to a stress ball.
John
Reviewed in the United States on September 27, 2024
Be a Great thing for beginners as well as seasoned players. Use after showers or swimming to keeping finger tips tuff. Plus it's a Fender product!! 👍
Redshack58
Reviewed in the United States on August 21, 2024
These things are great for building strength and endurance in your grip I noticed that in a couple of days I could play longer and bar cords were a lot easier to hold. I bought the 30# one first because I've been playing for years but soon decided that I needed to work with the 8# first. Between the pair has greatly improved my grip, get both of them you won't regret it.
TheWildBoy
Reviewed in Canada on August 21, 2024
These tools are great for building callus. They just work.The reason I gave it two stars is that if you are going to use them daily for 2-3 minutes they break after 2 months. They just snap. The spring is not strong enough. If anyone knows anyone at Fender they should tell them that this is a great handy tool but they need to use a stronger spring.
Lennemann
Reviewed in the United States on December 26, 2024
it helped me keep my callouses when i was away from my guitar and doubles as a cute chip clip
Barry Frank Cohen
Reviewed in the United States on January 23, 2024
I have played the harmonica most of my life and have always wanted to play guitar as well. Upon starting, I quickly realized my fingers were not up to the task. Searching on-line, I found this Fender product. Reading some of the reviews gave me concern, so I contacted the company directly. They told me they’ve reworked the product to assure the ‘pin’ will not come out. So I tried it. I’ve only had the Callus Builder a few days and am very impressed how effective it is. The quality is great and no issue with the pin whatsoever, it stays firmly in place. I can already feel the difference practicing guitar. The price is right too. Highly recommend.
Adam Spears
Reviewed in the United States on October 5, 2023
The pros. It works, and you can use it as a chip clip or a fridge magnet.However, mine fell apart in 5 minutes. There is nothing holding the pin in which holds the spring in and the device together. Also the magnet cover fell off while reassembling the unit.
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