Furi Rachael Ray Gusto-Grip Basics Line 6-Inch Santoku Knife Designed by Australian engineers and inspired by the best-selling Rachael Ray Gusto-Grip Knives. Antimicrobial inhibiters are incorporated directly and permanently into the Gusto-Grip Basics handles during the manufacturing process. 6-Inch Santoku Knife. Blade manufactured from CrMoV stainless steel for rust resistance and superior edge retention. Finger groove in handle for control. Caution! Extremely sharp edges created by Furi Tech Edge Pro Knife Sharpening System (sold separately).