31879 Project Blueprint Maxwell'S Wheel (4 pc/pack)

Project Blueprint's Maxwell's Wheel is fidget-friendly and desktop-fashionable. Stands 10 inches tall with black, blue and green coloring. An oscillating flywheel provides a yo-yo-like motion when engaged. Scientifically inspired for tactile and visual delight. Made with high-quality materials, this desktop toy features a smooth black base,  blue stand and wheel pole, a lime green flywheel and white string.