SynergyMill

Classic grooved steel honing rod with a black plastic handle and a hanging ring on the butt. For realigning a rolled edge on softer Western kitchen knives between real sharpenings — it straightens the edge rather than removing much metal.

Round ceramic honing rod with a black hex handle (the hex flat keeps it from rolling on the counter). Realigns and lightly refines an edge between sharpenings; gentler and finer than a grooved steel, so it works well on harder kitchen knives. Ceramic — will chip if dropped on a hard floor.