This fidget spinner features low friction, SS bearings with a plastic shell. Designed for anxiety and fidgeting, this spinning toy helps to reduce stress and maintain focus, especially in classroom or office settings. These spinners satisfy those who like to to jiggle, squirm, twiddle, twitch, bustle, fiddle, fuss, jitter, joggle, play, stir or wiggle! It spins for approximately 1:30 minutes.