About the M4 Tenon Spinner M4 Tenon Spinner by KTS is a linkage bar spinner where the outer ring drives the inner ring for a mesmerizing, quiet spin. Key Features Linked RotationSpin the body and the outer ring mechanically drives the inner ring. Smooth synchronized motion. Mortise and Tenon BuildInspired by traditional Chinese joinery. Concave convex interlocks create a stable, screw free union between parts. Low Friction InterfacesPrecision contact surfaces reduce drag for longer spin times and cleaner coast. Office Friendly SoundTuned for a soft note while spinning so you can fidget without drawing attention. Precision FitTight tolerances for wobble free starts and confident high speed control. Everyday CarryPocket ready silhouette with rounded edges for comfortable play.
