Model 3600BR heavy duty 1/2" collet. I have owned this unit since new. It is an excellent heavy duty machine that has has had very little use. It has been in storagefor the past 5-years. This model was built in Japan not China. I am only selling it because I have 2 other routers and they too get very little use. I am happy to sell or swap for a bench mounted Drill Press. I had trouble attaching photos, but I am happy to send a picture.