Get The spinner that came to late. This Design was a lesson in mold production in China. What was suppose to be a 2 month process took 5 months and came to late to the game. This Spinner is two molded ABS Halves ultrasonic welded together to hold 3 1/2" Stainless steel balls as weights. In the center is a pressure fit 608 Bearing with 2 nylon injection molded caps that twist together and have a swirl logo for grip. also includes compatible top attachment.Includes 608 Bearing, Set of Nylon Caps, Top Converter, SpinnerMaterials: steel,ceramic,abs