NATIONAL GEOGRAPHIC Professional Rock Tumbling Kit - Patent-Pending GemFoam 2lb Barrel, Grit Rock Polisher for Kids & Adults, Platinum Series Ultra Quiet, A Great STEM Science Kit

With its large 2- pound barrel, three selectable speeds, and timer with settings for days and hours, the Ultimate Tumbler delivers spectacular results with unparalleled ease of use The all-new design includes a sound-dampening cover that makes tumbling quieter than ever, perfect for smaller spaces.

Our quietest, most robust, and feature-filled tumbler yet! National Geographic, the leader in professional rock tumbling equipment, is proud to introduce the Platinum Series Ultimate Rock Tumbling Kit! The Ultimate Tumbler set is a revolution in rock tumbling, with a host of professional features designed to make tumbling fun, easy, and much quieter than before.

It boasts an all-new, ultra-quiet design; sleek, professional exterior styling; large, water-tight, 2-lb.

barrel assembly; easy-set timer with day/hour settings; variable tumbling speeds; and a patented agitate mode that reduces rock breakage.