Kyocera utility and peeler gift set includes 4.5 inch utility knife, vertical peeler in black. Made of zirconium oxide (which is second in hardness only to diamonds), the 4.5" knife"s ultra sharp blade peels and cuts with precision and accuracy every time. The peeler is composed of a rotating ceramic blade that"s non-stick. It will remain free of rust and will not absorb the after taste of food.