☕ PREMIUM MATERIAL: Made of 304 stainless steel stainless steel coffee piston features a perfectly flat base that provides consistently better grip than the convex base and easily cleaned after each use. Stainless steel massager is great for espresso, barista and coffee lovers ☕ Standard 51mm Size: The coffee massager formula is an adjustable hand dispenser designed to work with 51mm diameter coffee machine accessories including: Delongi Pumps, Capresso Pro, Homix, Prevail 800 Series, Jepas and Sachi ☕ IDEAL ESPRESSU: In addition to having good coffee beans and coffee powder pressure is easy to use, the main thing is . Coffee powder is compacted, flat and consistent surface making water uniformly extracted from coffee and fermented coffee more fragrant. The coffee formula piston is calibrated with an integrated micro-release mechanism that enables us to compress at the pressure needed for best results, and is designed to be installed every time. ☕ DURABLE & RELIABLE: Our 51mm coffee piston is heavy-duty food-grade stainless steel coffee piston, dishwasher safe and has a great look designed to ensure a perfect grip. Our standard swaddles feature a handle separate from the drain base. The handle, base and "click" will be connected when 30 pounds of pressure. The calibration plugs are perfect for beginner coffee professionals or professionals who want to 100% sure they have exerted the correct pressure.