The Victorinox Diamond Sharpening Steel is manufactured from Stainless Steel which is then encrusted with a Diamond Coating. 
 
This well-proportioned 27.5 cm Diamond Sharpening Steel with a Half-Fine Grit gives good balance with a symmetrical Handle to avoid concentration of wear of the steel. Its oval shape offers the user more contact with the rod as he swipes the knife over the rod's surface. 
Professionals and budding Chefs alike swear by Victorinox Sharpening Steels.
 
Specifications:
Rod Material: Diamond Encrusted Steel Rod
Length Sharpening Rod : 275 mm
Grit: Half-Fine
Steel Width: 17 mm
Hand Guard: 40 x 27 mm
Overall Length: 405 mm
Finish: Diamond Plated
 
Product Number: 7.8327