The Joker Spokes clamp is made of high strength polycarbonate.
The clamp fastens to the front fork of most 20” bikes and many other size bikes. The Joker Spokes cards are made of durable, exable, polypropylene. Joker Spokes cards come in a variety of colors and sizes, each size produces a different type of sound.

 

 

 

Joker Spokes Changeable Cards

Includes 3 cards -
One of each color red, blue, and green in 2 different sizes

$3.99 ea.