Stratus Culinary Cascade by Ken Onion 9-Piece Knife Block Set, Brown Designed by award winning knife designer Ken Onion Blade is constructed of durable American made high carbon 420HC Stainless Steel - retain edge and sharpness Handles are constructed of dishwasher safe durable glass filled polypropylene - impervious to moisture and heat resistant Block is solid oak Dishwasher Safe - Hand Wash Recommended