Well designed and well built it is the "mother" of all knockboxes!
Positive Product Points
Large capacity Brushed stainless steal tub looks great Understated logo design Spare gaskets, bump bars included Certainly a nice match with any stainless steel espresso machine
Negative Product Points
None so far, however if counter space is at a premium "Bumper" may be too large for your kitchen.
This is a very large knockbox. How large? It is the size of my five year old son's head. Will easily hold 30 wet pucks.
Knockbox arrived quickly and neatly packed. Inside was the large stainless steel tub, bottom gasket, top gasket (1 spare), bump bar (2 spares), 2 bump nuts, threaded steel bolt and thoughtful directions written in both English and Japanese.
Brushed stainless steel tub is exactly the same color and texture as my La Cimbali Jr. grinder. The bottom rubber gasket fits snuggly around the base of the tub insuring non-slip contact with kitchen counters or tabletops. The upper gasket slides over the top edge of the tub. Center bolt and bump bar are held in place by the two outside nuts (bolt and bump bar are a nice, snug fit inside the tub). Assembly/disassembly takes about 10 seconds.
A quick smack on the center bar easily dislodges any espresso puck. Noise is not an issue, fairly quiet.
"Bumper" rinses out easily with water. Really too large to place unit in a diswasher.
In a commercial setting (next to 3 or 4 group machine) this knockbox would be the perfect accessory. On the table next to my 1 group machine this knockbox is almost too large. It is four times larger than the Grindenstein it replaces.
Should outlast my espresso machine. Side nuts and center bolt are heavy and secure.
Couldn't have been easier. Sent Paul Pratt at Just Java an e-mail and he took if from there. Wonderful service.