UltraEdge™ blades represent the widest selection of high-precision detachable clipper blades in the industry. Andis' exclusive carburized hardening process delivers the longest lasting, smoothest cutting blades. Andis applies a special chrome finish to reduce corrosion and maintain optimum cutting performance. These blades fit on Andis models AG, AGC, AGR+ and MBG, Oster A5 and most detachable-type clippers. Size: 40 Surgical stainless steel Leaves Hair: 1/100", 0.25 mm