These carbide-tipped shaper cutters are specifically made for use on shapers with 1/2" spindles. Smaller profiles are ideal for shaping small radii and for making picture frames. These 1/2" bore, 2mm thick carbide cutters stay sharp longer than the old HSS cutters and are priced right, too. Can be used in hard and soft woods and wood composite materials. 5,000-10,000 RPM. Model C2008 Dimensions: Cutter Dia.: 2" Cutting Length: 1/4".