SLEEK AND STURDY KNOCKBOX : This coffee grounds box keeps the coffee grounds in the box .Easy to knock out clean pucks with the rubber knock bar which removes easily for cleaning FIT MOST ESPRESSO PORTAFILTER : This coffee knock bin with a portafilter holder, which can work with most 51mm, 53mm, 54mm, 58mm coffee portafilter, make it to be a wide use portafilter stand LONG-LASTING COFFEE GROUND STORAGE BOX : It is made of heavy gauge stainless steel , make it to be noted for its fine workmanship and durability , you can tell the quality when you pick it up THE DESIGN IS VERY SLEEK BUT AFFECTIVE : The coffee Ground Bin no sharp corners, the higher back and lower front mean the grinds wont splatter everywhere. The bottom is equipped with two non-slip feet, keeps it from sliding around and makes less noise PACKAGE INCLUDED : You will receive 1 piece coffee knock box which length is 205mm (8.07 inch), width is 145mm (5.7 inch) and heigth is 140mm (5.51 inch) , also come with a knock bar