Tip:Pleasemeasuretheinnerdiameterofyourcoffeebasketbeforepurchasingatamper.YoucanpurchaseatamperbasedontheinnerdiameterofyourcoffeeThisstepisveryimportant.Incaseyoubuythewrongsize. 51mmtamperissuitablefor51mmportafilter. 53mmtamperissuitablefor54mmportafilter. 58mmtamperissuitablefor58mmportafilter. Item Name:Dual-Sided Spring Tamper with scale Material:304 Stainless Steel Base and Aluminum Handle Dual-Sided: 3Angle and Flat 3Angle Adjustable Depth: 10mm Flat Sided With Spring. Base Diameter: 51mm/2inch, 53mm/2.08inch, 58mm/2.28inch. Package Included: 1Pcs* Dual-Sided Spring Tamper Notice: 1. Please allow 1-3mm error due to manual measurement. pls make sure you don't mind before you bid. 2. the color may have different as the difference display, pls understand. The 51/53/58mm Coffee distributor and hand tamper can work with 51/54/58mm portafilter. 2 in 1 Dual Design,The coffee product integrates the distributor and tamper. Before tamping, use four-page auger design distributor to evenly distribute the coffee powder to ensure each tamping pressure is consistent and the surface is uniform. Adjustable Depth,The depths of the tamper and distributor can be adjusted to accommodate different depths and doses. This tool has a conspicuous depth marking scale and is easy to operate. Safe To Use,The espresso tamper is safe, durable and easy to clean, with food-grade 304 stainless steel base. Coffee Lovers' Choice, The coffee product weighs 51mm-340g, 53mm-350g, 58mm-400g, so it's heavy enough for distributing and tamping uneven coffee powder.