SCHILDKROT Spinball Gyroscopic Hand and Arm Trainer, Grey/Green, 70 mm, 255 g 960121

Musicians warming up before a performance, office workers relieving tension at their desks, and athletes strengthening their forearms all reach for the SCHILDKROT Spinball. This compact gyroscopic trainer fits in the palm and generates resistance through a spinning rotor, helping to build grip strength, wrist stability, and arm endurance without any batteries or cords.

Key specifications

• Product type: Gyroscopic hand and arm trainer
• Mechanism: Gyroscopic rotor
• Diameter: 70 mm
• Weight: 255 g
• Material: High-quality plastic casing, metal rotor
• Colour: Grey / Green
• Power source: Mechanical (no batteries required)
• Starting method: Manual / self-starting

Why choose it

The Spinball's inertial resistance increases with rotor speed, so you can adjust the intensity simply by how fast you spin it. Its ergonomic spherical design provides a comfortable grip, and the robust construction stands up to regular use. Because it is purely mechanical, you can use it anywhere—at home, in the office, or while travelling.

Ideal use cases

• Strength training for grip and forearm muscles
• Rehabilitation exercises for wrist and arm mobility
• Warm-up before sports or musical practice
• Stress relief and active break at work

Good to know

The Spinball comes as a single unit and is ready to use out of the box. No assembly or power source is required—just give the rotor a spin and feel the resistance build.