1. Perfect Compatible: This 51mm bottomless portafilter . Tips: Please check to make sure your machine fits before purchasing! 2. The coffee liquid extracted by the bottomless handle has more fat and better quality, so you can enjoy the shiny golden brown coffee column that is immersed in the espresso In the beauty 3. Coffee master's training partner: the bottomless design can help observed the flow column, flow rate, color, flow column , etc.and better judge the uniformity of extraction, thereby making it more delicious 4. The removable design is convenient and quick to disassemble, easy to use . size: The inner diameter is about 51mm Colour:Black+silver Material:Plastic + Metal Package Contents: 1 x Bottomless Portafilter 4 x filter Only the above package content, other products are not included. Note: Light 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.