These blades are used for cutting spiral bevel and hypoid gears and pinions. They are manufactured as a two sided (Alternate) or as a three sided (Triplex) for 5″, 6″, 7.5″, 9″, 12″, 16″ diameter in the full range of blade shape dimensions, right hand (RH) or left hand (LH). Made of high speed steel (HSS and PM-HSS). Order acording to enclosed cutter specification.