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Pro Compatible with all post-2010 Edwin Jagger and Mühle heads
This includes the Mühle R41 open comb, known for being one of the most aggressive razor heads that exposes a lot of the blade should you want a closer shave. Also includes the equally popular Edwin Jagger DE89, another mild safety-bar/closed-comb razor head similar to the R89.
Con Smooth handle finish can cause a looser grip
May weaken grip because of a relative lack of texture on the handle apart from the vertical bumps.