Monkey Knuckles

Monkey Knuckles is a skill toy consisting of two sliding wooden balls on a string, with end stoppers that allow the player to grip the toy.^[1] The toy can be manipulated in a variety of ways to perform tricks, and depending on the way that the player grasps and manipulates the toy, different styles of play are possible.^[2]

Monkey Knuckles was developed by Matthew Hiebert,^[1] and was patented in 2006.^[3] In 2013 Hiebert licensed the design to Yomega Corporation, which took over its manufacturing and distribution.^[1]