Check the listing for details. Global Speed Sharpener GSS-01. Condition: New. Listed at 30.00 USD. A simple sharpener for double-edged stainless steel knives.This is a sharpener for double-edged stainless steel knives. The sharpening unit is made of ceramic, which improves sharpening performance and eliminates the risk of rust. If your knife starts to lose its sharpness, you can temporarily restore its sharpness by gently pulling the blade toward you 6 to 10 times. The most suitable way to maintain your knife is with a whetstone, but if you find sharpening with a whetstone too much of a bother, this is recommended for simple everyday use. useSimple sharpener for stainless steel knives材質Body: Stainless steelSharpening part: Alumina ceramicssize1.5cm length x 10.5cm width x 2.5cm heightweight65gThere may be slight individual differences in dimensions and weight.Please note that some product specifications may change without prior notice.Do not use with the GLOBAL-IST and GLOBAL-PRO series knives as the blade angle and precision are different. This may cause the blade to chip or become chipped.This is a double-edged knife, so it cannot be used with single-edged or serrated knives such as deba, bread knives, or cheese knives.