BOULDER BALL - Hand Strength Trainer

Name: BOULDER BALL - Hand Strength Trainer
Price: 52.0 AUD
Rating: 5 (1 reviews)

The pull-up and pinch powerhouse

$52.00 AUD

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Shipping Offers!

Flat rate of $7.95 on all orders in Australia, FREE over $125!
USA FREE shipping over US$150!!
Items are usually dispatched within 1-3 working days of order. During peak demand periods, this might bit longer. We will always notify if delays are expected.

Color: Deep Blue

Quantity

Grip variety meets portability.

The Crux Gear Boulder Ball brings four training modes into one compact, ultra-light tool. Designed for climbers who want versatility without the bulk, it delivers open-hand pull-ups, flat-edge pulls, and two wide pinch holds — boulder-sized package that fits in your pack.

Why You’ll Love It

2 Pull-Up Modes – Train open-hand on the 10 cm dome or switch to the 8 cm flat side for a more precise pull.
2 Pinch Holds – Flip for a flat or sloped 10 cm pinch, perfect for no-hang or resistance work.
Reversible Cord – Switch between modes in seconds, no tools needed.
Ready to Hang – Comes with a 12 kN carabiner and strength-tested to handle 150 kg of load.
Portable & Light – Just 165 g each, so you can pack one or pair them up for double pull-ups.
Skin & Grip Friendly – Divot pattern and textured finish adds friction and comfort — use with chalk for max control.
Plant-Based & Tough - 3D-printed in eco-friendly PLA.

Why It Works

Train your open hand, refine your pinch, and build full-range pulling strength — anywhere. Whether it’s single-arm isolation or a quick warm-up at the crag, the Boulder Ball adapts fast and keeps your sessions simple, effective, and skin-friendly.

Looking for something smaller? Check out the Rock Ball — a compact 8 cm version that keeps the same durable build and versatility in a tighter grip. The Boulder Ball gives you extra surface and wide pinches options, while the Rock Ball dials in precision and control. Many climbers pair them for a full-spectrum grip workout.

Young users please note! Using finger holds or performing no hang training incorrectly can lead to injury. Please read the Info For Young Climbers here.

Why choose 3d Printed gear?

3D printing lets us design and refine products without the limits of moulds or machining, so you get smarter features, faster innovation, and better value. We use high-grade materials, complex engineering and rigorous testing to match or exceed the strength of many traditional methods. Learn more on our Technical Info page.

Returns - Satisfaction guaranteed!

All Crux Gear brand products come with a 30 day return warranty. See Refund Policy.

Colour information

Colours seen on your screen are intended as a guide only and should not be regarded as absolutely correct. Colours may vary lightly from batch to batch and differ on your screen. Rope colour will depend on current stock and may be different to what is shown in the image. You can ask, but we cannot guarantee a specific colour.

Environmental responsibility

We use a plant based bio material for our 3d printed products. This is not a petroleum based plastic and does not harm the environment.
Our packaging and mailing satchels are compostable in your garden, or will biodegrade on their own. Even our packing tape can be fed to the worms!
Wherever possible we use environmentally responsible products.

EU, UK & US duties

Our prices don’t include local taxes, VAT, or import duties. These may be added at checkout or by your local customs on delivery. We’ll always be upfront so there are no surprises.