For preliminary sharpening where chips exist or bevel angle need to be changed, use the 250/1000 waterstone. To remove smaller nicks and do a finish sharpening of woodworking chisels and other tools, the 800/4000 combination is the best choice. Finally, use the 1000/6000 waterstone for creating a polished edge.
Nagura Stone Forms a paste on finer grit Waterstones to speed and enhance polishing. Use with the 6000 grit stone.
Waterstone Holder For non-slip sharpening. The arms are made from chrome plated steel that resists rusting. Holder handles stones 7 to 9" long.