That looks pretty good but I always wonder about vendors that don't provide important information like the t-slot size it's compatible with. Some Amazon vendors selling it don't provide _any_ dimensions.
My reservations are colored by the fact that, being the owner of a mini-mill, it's about 100% likely this particular attachment isn't going to be a buy it/use it deal for me. It even may not be possible to use it at all if the mounting screw is too large for my machine. I sort of doubt that but I've been burned by trusting an unvetted assumption before. More than once
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