yes it is, but the adapter doesn t get to the point the machine touches it inside to block the wise from spinning around. and also I found out the the adapter is too long, meaning that the needle of the cartridges has a ridiculously short throw. so far I cant use this product. if I'm doing something wrong or am missing something, I'd like some tips about it. it seems strange that the people at bishop didnt realize these 2 points that renders the adapter unusable