About this item Please measure the inner diameter of your coffee basket before buying it. This is a very important notice to avoid buying the wrong size and affecting your shopping experience, The Tamper is only suitable for 51mm (2-inch) portafilters. The Tamper base diameter is 51mm (2inch) The second picture has a measurement method, it is to measure the inner diameter of the coffee basket 51mm (2inch). It is suitable for all brands of 51mm portafilters. If your portafilter is 54mm or 58mm, please don't buy it, because it is only suitable for 51mm portafilter Complete Set: This 5-piece espresso tamper set includes a 51mm tamper, WDT tool, dosing funnel, puck screen, and cleaning brush, The Tamper material is 304 stainless steel base+wood handle, The Puck Screen material is 304 stainless steel, The Dosing Funnel Material: Aluminum Advantages of the Dosing Funnel: 1.It has 6 magnets, which can better absorb the portafilter, 2.It is stuck outside the portafilter, you can press the tamper directly without removing it, which can better prevent the coffee powder from falling About whether this tamper can be placed at the bottom of the coffee basket? 1.The diameter of the top and bottom of the coffee basket is the same, and the tamper can reach the bottom. 2.The top diameter of the coffee basket is large, and the bottom diameter is small, so the tamper cannot reach the bottom. See Picture 7 (there are pictures to demonstrate and inform)