Universal Wooden Magnetic SayaPoplar Magnetic Saya covers Keep your blades sharp and safe anywhere. In a drawer, on the counter or in a bag these new sayas feature recessed magnets and a laser engraved Kikuichi logo. These sayas are custom made for Kikuichi by wood craftsman David Choi in Chicago. Please note these saya are generously sized to fit as many knives as possible, and the knives are loosely held in place by magnets, not tension.