This Brass and Stainless Steel Keyring is the perfect gift or fidget toy to take with you on the go. Our Captive Nut Puzzle is an excellent stress reliever for anxiety and to reduce stress for anyone with ADHD who needs to focus on the task at hand.

Captive Nut Puzzle - Bruce Charles Designs


Masquerading as a dual-ended keychain with a hex nut threaded on it, it allows you to discreetly ease anxiety in the car, on the subway, or in the lunchroom at school. It has been precision-machined for smooth and satisfying operation.

How Is a Captive Nut Puzzle Made?

Bruce Charles Designs creates our products to last. A Captive Nut Puzzle is CNC machined from solid brass. Its high-quality design is meant to endure drops and scratches. It's also functional and doubles as a keychain.

What Are the Benefits of a Captive Nut Puzzle?

Fidget toys are more than just fun. Studies show that fidgeting improves the ability to pay attention, problem-solve, and increase engagement. Beyond being a tool for focus, nut puzzles are a great way to pass the time or gift to someone who has it all.

Fidget Gifts: Tops + Teak Spin Base Pack

Bruce Charles Designs also makes fidget gifts, gadgets, and works of art to pass onto your family, friends, and colleagues. Our Four Metal Spinning Tops pack comes with a stunning teak top base and spinning glass double concave lens. This unique gift set comes in brass, bronze, stainless steel, and fused aluminum and brass tops. All of our tops are carefully crafted with knurled tops. Build up your skill and see how long you can get your tops to spin. Some of our customers achieve 8 to 12-minute spins and more.

Captive Nut Puzzle Review

Get the information about captive nut puzzles straight from our customers. Here's what they have to say:

"Great key fob for me to play with while waiting for my husband doing his shopping at Home Depot or Lowe’s. Good quality. Excellent communication with seller when I had a question. Highly recommend product" - Arleen

"What a great little device. This piece is way more than I expected. Made with precision from high quality materials, it is easy to carry and it is FUN and RELAXING to fiddle with. The Valet Key feature is a wonderful touch. Make some more neat stuff for us please."

"I bought this keychain to use at home, but instantly realized it would be the perfect fidget tool to have in my classroom. Because of its durability, it will last through all of the students that need something to fidget with. It's also small enough to not draw attention to kids needing it. My students are already enjoying using it." - Krista M.

Why Purchase from Bruce Charles Designs?

Bruce Charles Designs is a family-owned business built on the foundation of family and years of tradition. We focus on superior craftsmanship with excellent engineering and an eye for detail.

Our items are perfect for unique gift-giving that blends form and function. Enjoy gifts and gadgets offering ongoing visual stimulation to create a calmer and more creative day than just a stunning gadget or toy.

Purchase Your Own Captive Nut Puzzle

Ready to purchase your own brass spin tops? Browse the selection from Bruce Charles Designs to find the perfect captive nut puzzle or spinning top.