Surfacing, Planing Router Bits are made by Amana Tool, the leading manufacturers of high quality wood cutting tools. 1-1/2 Dia x 1/2 Cut Height x 1/2 Shank x 2-1/2 Inch Long Spoilboard CNC Router Bit. Excellent for: Aluminum, Bronze & Copper, Aluminum Composites, Composite Materials, MDF, Particle Board, Plywood Veneer, Wood. SPECIFICATIONS: (D) Diameter: 1-1/2; (B) Cutting Height: 1/2; (d) Shank: 1/2; Overall Length (L): 2-1/2; Max RPM: 14; Flutes: 2.