Manual Ceramic Coffee Grinder, Stainless Steel with Bonus Measure Clip Spoon. AEROPRESS COMPATIBLE Easily adjust the knob to get your perfect grinding size Stainless steel, high quality, ceramic grinder - for uniform grinding size Enjoy fresh coffee, at home, while on the road, at camping and any outdoor activities BONUS: Measure clip spoon for both measure the exact amount for a perfect coffee, and a clip to close the coffee bag AEROPRESS COMPATIBLE