The MAC Superior Series Bread/Roast Slicer Knife is the ultimate in precision, strength and balance. The blade is made with high carbon chrome Molybdenum steel with vanadium to ensure that it will hold its edge and not rust, even in moist environments. It has a 59-61 Rockwell hardness rating, which means it will stay sharp over time. The handle is constructed of resin Pakkawood with a bolster for added weight and balance. All this comes together to make the perfect knife for slicing bread or roasts of any size.