Axis is a "revolutionary" new take on the classic Hedgehog in a Cage puzzle. A futuristic design crafted from stainless steel hints at the highly sophisticated level of engineering required to make the surprising solution to this puzzle possible. Axis is hefty, it weighs almost three quarters of a pound, but it doesn't require brute strength to solve. The action of the ball bearing mechanism is so smooth and satisfying, as is the technique required to extract the spikey ball from the cage. Created by the same expert puzzle designer as Hexahog and the Brass Hedgehog in a Cage. Measures approximately 2"x3". Difficulty level 8 out of 10. Made in Czech Republic.