FENDER Callus Builder and Finger Strengthener (Red, £8) – For stringed instrument players (guitar, bass, violin, etc.)

Fender – a global musical instrument manufacturer – has partnered with Fender to offer licensed callus builders and finger strengthening tools to help musicians improve their playing experience. Designed in the shape of Fender's world-famous Stratocaster guitar. Raised ridges – The only finger exerciser with raised ridges to simulate the strings of a stringed instrument. Helps builder calluses – Calluses are areas of thickened skin that form in response to repeated friction, pressure, and other irritation. The Fender Callus Builder is designed to create pressure similar to that of a stringed instrument string. Simulates precise angles for performance – Easily manipulate the Fender Callus Builder to obtain the precise angle you use while playing a stringed instrument. High tension – Available in two different resistance levels: Red 8 lbs and Black 15 lbs. The 15 lbs tension is extremely firm and provides more tension than other finger exercisers on the market.