The cheese knife, cleaver, and spreader are all dishwasher safe, rust resistant, and will last a lifetime. Each item in this set is put through 25 production stages, before they are stamped, polished, and packaged. ABS handles Stainless Steel Sharpened Blades Cheese knife/ Spreader/ Cleaver Stainless steel caps Certificate of AuthenticityCare Instructions:  We recommend washing your cutlery gently by hand under running hot water and to wipe it off immediately after. However, most products, apart from those with natural wood handles, are dish-washer safe.