Comandante C40 Nitro Blade Coffee Grinder MK4 (American Cherry) Capacity: 40g jars 100% natural oak wood knob Aluminium free 100% food safe Unbreakable polymer-glass Bean Jar Made in Germany Grind your way to the perfect cup with the Comandante C40 Nitro Blade Coffee Grinder MK4\. With a 40g capacity and an unbreakable polymer-glass jar, this German-made grinder features a 100% natural oak wood knob and is 100% food safe. Get your grind on in style with this quirky and durable coffee grinder.