Outer piece spins easily around the sphere!!! Fidget Spinner Pencil Topper 3D Printed PLA Plastic. BEST fidget for school :) Fits on a number 2 pencil so you can still use the eraser. 1 inch wide x 7/8 inch tall I have white and black available... More colors to come. When purchasing comment the color you want.. If not I will send white. To buy a 3 pack (save a little) go here: http://Pricetronic.us/8mIQYF?cmpnId=5338273189