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Knucklebone Dexterity Toy - Zirconium


The Ultimate Dexterity Trainer

Looking for an engaging way to improve your finger dexterity, focus, and reduce anxiety? Look no further than the Polar Dexterity Toy

The Polar Dexterity Toy is manipulated with the fingers of one or both hands to train dexterity, perform tricks, or simply pass the time.

Milled from a single piece of solid zirconium. Zirconium creates a natural, beautiful, jet-black oxide layer when heated at high temperatures. This layer makes it incredibly durable and scratch-resistant. Its black lustrous finish is beautiful, making this the ultimate dexterity toy.

The dumbbell shape is designed for smoother flow and better trick potential. It slides perfectly between your fingers with little effort, even for a beginner.  It's a satisfying feeling to let it dance between your fingers.

It helps train your finger dexterity passively, reduces anxiety, and keeps your mind focusedFor those with ADD, ADHD, autism, or anxiety, it can bring relief. With practice, it can help all achieve better focus and clarity by reducing fidgeting.

Each Dexterity Toy comes with an O-ring to display your toy on the desk. 

Why Solid Zirconium?

  • Used in jewelry and other decoration for centuries 
  • Resistance to corrosion: even higher than Titanium 
  • Named from the Persian "zargun" or gold color 
  • Common in cool stars and moon rocks 
  • Density: 6.52g/c m3


  • Colors: Black
  • Materials: Zirconium
  • Measurement: 20*60mm
  • Weight: 65g

Polar Metals seeks to spice up your life with interesting and unusual metalsin unexpected ways.

Customer Reviews

Based on 1 review
Hyun jin Jung

Zirconium is always a satisfactory product. Thank you for the special gift

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