This is a hand-roasting device. You can easily roast coffee beans at home and enjoy freshly roasted coffee to your liking. 〈How to use〉 Simply put the green beans in the roaster and shake it left and right over a gas stove for 3-5 minutes. The green beans will rotate and roast evenly. 〈Size〉 Width 10cm Length 32cm Height 6.5cm The main body is made of aluminum with good thermal conductivity. The surface is anodized. The handle is natural wood. It weighs 240g, making it easy for women to use. Also suitable for outdoor activities like camping. It has been stored unused since purchase.