1. Perfect Compatible: This 51mm bottomless portafilter. Tips: Please check if your machine fits before purchasing!2. Coffee master training partner: bottomless design can help you observe the flow column, flow rate, color, flow column stripes etc. and better judge the extraction uniformity, making it more delicious3. The coffee liquid extracted by the bottomless holder has more fat and better quality, so you can enjoy the shiny, golden-brown coffee column immersed in espresso in beauty4. Removable design is convenient and quick to disassemble, easy to use. Color: black + silver Material: ABS + metal Size: 51mm Package contents: 1 x coffee holder 3 x filter cup (1 2/4 cups each) Only the above package content, other products not are included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement error is +/- 1-3cm. Shipping Time: We can ship all products within 5~8 business days