Make sure this fits by entering your model number.
Durable to play: roller chain and key flippy chain are made of stainless steel and silicone, the infinity cube is made of plastic, can be played for a long time, good for boys, girls and adults with ADHD, ADD and OCD to relieve stress or anxiety at any time
Make your fingers flexible: the roller chain contains with 6 rollers is about 3.5 cm/ 1.38 inch in diameter, small size allows you to use one of your finger to turn it over and over, the key flippy chain and infinite cube can be twisted in any direction, nice tools for training your fingers and relieving stress