Mechanical coaster with spinning planetary gears. Twist the top layer and watch all the gears rotate. Perfect for your office, living room, or a gift for someone who's mechanically minded! Natural wood base and gears, acrylic top, and metal drive pins and ball bearing. A little thicker than a standard coaster at 5/16" thick I originally designed them for when I was hosting game nights. They always get a smile from anyone who sees them! Note on shipping: As I mentioned in the store bio, my full time job is being a cargo pilot. That has me traveling around the world for about 1 to 2 weeks straight at a time. If an order is placed right as I start a trip, processing time will unfortunately be dependent on my schedule. Normal processing time will just be 1-2 days. If your order is time sensitive and want to get an idea on shipping times, feel free to reach out!