EFFICIENT BURR - Z5 coffee bean grinder with 38mm seven axis titanium-plated conical burr that makes the grinding process more detailed and the coffee powder more uniform. Speed hand grinding only takes 35 seconds. Hand crank electric dual mode, can be used with electric drill to use electric mode. EXTERNAL ADJUSTABLE KNOB - Coffee grinder manual with external adjustable grind Selector with 100 small grinds in one circle, ensures you have 100% precise control the coarseness of your pour over, drip, cold brew, French press, percolator, Espresso, perfect grind every time! SMOOTH USE: The Z5 crank of bean grinder takes very little effort and empties completely regardless of which grind size we use. The textured sides make it much easier to hold whilst grinding, and the wood handle spins freely. We haven't experienced any slipping, catching, or skipping. TAKE IT EVERYWHERE: The ZeroHero Manual Coffee Grinder only takes up little space, compact and lightweight. Ideal for you to brew fresh coffee for camping grinder, hiking, backpacking trip. PRODUCT GUARANTEES - Our coffee bean grinder has passed a professional grade inspection, and been proved that its service life is 5 times longer than that of a general blade grinder. One-year warranty, you will definitely get 100% customer support. Package: bean grinder, coffee brush, bean cover, instruction manual, gadgets