Nuvo Eco Ceramic Handy Coffee Bean Roaster Material: Body- Ceramic, Grip-Genuine cowhide Eco Ceramic Roaster: 100% ceramic, Size: 243mm(Total length)x132mm(Diameter)x33mm(Inlet), Weight: 340g, Color: Brown, Capacity: 30~70g Waffle-shaped internal structure: equal roasting, you can enjoy a popping sound due to the rear hole Package: 1xCeramic Handy Roaster, Made in Korea, Republic of Please take a look at video on Youtube how it works. https://www.youtube.com/watch?v=3dIZUtCJzBc