This spinner is CNC milled and surface ground from heat treated 4140 alloy steel. The case is milled from 6061 aluminum and retains the star with 4 neodymium magnets. The finger grips are made of stainless steel and turned on a CNC lathe. The grips are threaded and mount to the inner race of a ball bearing for a high precision and smooth glide. This spinner is very satisfying and you will not be able to set it down! Warning: be careful of sharp edges!
