IMS - Double Basket - 58mm (12g-20g) - 24.5mmH - 1pcOverview The BaristaPro Filter Baskets by IMS are designed especially to promote an even extraction and avoid channeling. To do this, they created a filter with a precise amount of holes 661 to be exact in the case of the double filter baskets or 269 for single shot baskets, that cover nearly the entirety of the basket. The diameter of the holes at 300 microns, is also larger than found in other similar filter baskets. Filter baskets from the Barista