Thanks Nepas, but that didn't really answer my question. I was wondering why the blade is a two-piece design? Is it for strength/stability? I'm trying to figure out why one couldn't eliminate the round piece and just screw the pipe directly into the blade itself? Maybe I'm asking the wrong person Cougar if you read this, can you shed some light?
"Here is the blade design. You need a corded 1/2 chuck drill and keep mixing forward, once you reverse the drill the blade unlocks from the bottom washer assy."
The blade stays on the bottom so you can pull the shaft out easily. Otherwise your lifting all the meat up while removing the shaft with blade attached.