Constant pressure constant pressure powder pressure strength at 30 pounds pressure to improve stability oil extraction more abundantHorizontal pressing powder vertical filling press gasket and powder bowl fit to make the pressing powder to achieve balance horizontal pressing powder to solve the pressure deviation pressure deviation to reduce channel effect304 stainless steel solid base is made of high quality 304 stainless steel without rust and corrosion resistanceGreat for Professional Baristas - you tamped espresso from your own coffee maker, you'll forget about your local coffee shop and fall in love with hand-brewed coffee. This is the highest quality tamper to date.With this tamper, the coffee distribution and pressure time, eliminating the key variables in making espresso and achieving even extraction, it will be your go-to espresso best accessory.Product parametersName: balanced fixed force powder presserSpecifications: 51MMApplicable occasions: coffee shop, office, homeColor: GrayMaterial: stainless steel+aluminum alloyPackage Contents:1 x Coffee Tamper 51MMOnly 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.