HARKILA Diamond Sharpener Stick - GreenHARKILA Diamond Sharpener Stick Green The Harkila Handy 13 cm sharpening rod in diamond coated carbon steel. The rod is stored in its aluminium holster and is easy to take out into the field, to keep your Hrkila knife sharp. Multi purpose steel, also ideal for saw teeth, the guthook on the Glomma knife, and fish hooks. Rod stores in handle Suitable for flat edges, serrated edges, fish hooks w clip