[Fits 51mm Portafilter]Castle Coffee Needle Distributor fits 51mm portafilter perfectly. After a few spins, you will get evenly-distributed coffee powder. [Adjustable Needle Depth]The maximum needle depth is 19.5mm, which is enough to reach the bottom of most 18g filter basket, then achieve thoroughly distributing. [22 Needles Evenly Distribution]Scientific arrangement of 22 needles allows efficient and evenly distribution. Improve your extraction quality and reduce unpleasant taste in coffee liquid. Color: Silver Material: aluminium alloy Package Contents: 1 x Coffee Grounds Needle Only the above package content, other products are not included. Note: Light reflection 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.