They sell this type of grain mill on Amazon and eBay, with capacity of chopping chamber size from 50 grams of grain or bark or to 700 grams ...prices run from $25 to $ 200 . .i bought a refurbished one CHEAP/ THRIFTY the vendor had to replace the power cord .

mines the larger one with a 700 gram chamber , but it will chop 50 grams just fine .

another poster was right there is no safety shut off switch ...............so it will run with lid open so never plug it on tell chamber is clamped shut or you might chop some fingers off..... SAFETY first .................think about what your doing . before you proceed using one of these mills .

this vendor sells three sizes . https://www.amazon.com/Electric-Stainless-Grinder-Seasonings-Superfine/dp/B092LQWZV5/ref=sr_1_15?_encoding=UTF8&c=ts&dchild=1&keywords=Grain+Mills&qid=1629266455&s=kitchen&sr=1-15&ts_id=3117957011