The synthetic shaving brush knot is used more long time than other natural hair.They can be dyed any color that the client' need .and we use the good dyestuff ,so the synthetic is not fade.The synthetic shaving brush knot has different shapes,such as bulb shape ,fan shape and  so on,we can make special shape according to your need.All shaving brush we provide are made by hand by experienced and skillful works.so the quality are the best.The size of the knot diameter is selected from19-30mm.