5/16" x 1-1/2" x 25" M3+ HSS Corrugated Moulder Knife Steel Grade_Carbide 137OD Hydro-Lock heads are used

137OD Hydro-Lock heads are used on moulders with larger spindles and larger cutting capacities with jointed knife feed speeds up to 200 ft

two pockets for profile knives (9100 style)

Bore Diameter (D) - 1-13/16"

Vitrified stones are for cooler honing and are more aggressive

Great for most long runs in soft or hardwoods

5/16" x 1-1/2" x 25" M3+ HSS Corrugated Moulder Knife Steel Grade_Carbide 137OD Hydro-Lock heads are usedSteel Grade M3+ HSS Thickness 5 16" Width 1 1 2" Length 25" Brand Titan Knife M3+ HSS High Speed Steel: M3+ HSS offers up to 100% longer tool life over M2 HSS. This super alloy steel is great for long runs or on tough hardwoods. M3+ HSS contains high levels of Vanadium, Tungsten, Molly, and Chromium for extended wear life. Treated to 66 Rc hardness which is one of the hardest HSS offered. Knife corrugations are 16 per inch at 60 degree angle.