Grind shaking made fun and easy! The Magic Cover turns the Magic Tumbler into a magical shaker. Unique features include: 1. Full array of larger rare-earth magnets for a stronger seal 2. Fixed center bumper to gently press down on the plunger 3. Slightly larger diameter to avoid pinching and for an easy twist-open No more grabbing your shaker like a 3-prong claw machine, and certainly no more shaker accident. Works with the Magic Tumbler only (not included). By itself ships with Taiwan Post.