The Osma alum block is the one preferred by many wet shavers. Unlike cheaper compressed and molded alum blocks, the Osma block is cut from a larger alum block and machined and sanded into shape. It’s solid through and through. Check out their manufacturing process at: https://youtu.be/SNdnOjX1apY Osma Alum Blocks: Bloc Osma Alum Block, […]