This is a Madison spindle mounted face driver with a spring loaded center and has five driver pins that appear to be in good working condition. It says it was a sandvik company but speedgrip . com says they sell replacement parts for them.I haven't had a need for this so I am selling it It bolts directly to an A6 spindle nose. It was on an Okuma cadet LNC8 I am no longer running the shafts we used to do so it's time to go.