Merkur Double Edge Safety Razor

This is a mild razor, and it did not thoroughly cut the whiskers on my 72 year old face. I added a plastic shim from the lid of a margarine tub lid (0.035”) between the base plate and the blade. Now it cuts my whiskers, but does not cut me. (Adjustsble razors were developed after shavers shimmed their razors over several decades to customize their cut.) This razor is very nicely made. It is three piece and the stud threads are 10-32. It is closed comb. It is very comfortable to use.