1.Specially made 7-angle 420 stainless steel grinding core,Versatile grinding core, sharp blade for quick cutting, low heat generation, and long service life, grinding machine can produce accurate and uniform grinding effect, suitable for coarse to medium coarse, medium, fine powder, adjustable range of particle size 150-1400um 2.Aviation aluminum alloy body, classic three-dimensional lattice pattern, exquisite style, non-slip easy to hold, durable, smooth and effortless grinding 3.The lens ring external adjustment design, like a camera lens, has a dense and delicate feel, a reliable and non loose structure, smooth adjustment, and a strong mechanical feedback for sound 4.0.01666mm/grid ultra fine adjustment is suitable for high-precision adjustment of espresso,Three bearing design,smooth grinding, easy grinding, uniform powder 5.Small machine warehouse large capacity, a time can grind about 20G coffee beans, to meet 2-3 people coffee color:Grey material: metal Package Contents: 1 x Bean grinder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.