MADE IN THE USA: Our Spektra Coated Bits are proudly made in the USA; the Spektra CNC router bits feature a nACo nanocomposite coating with an extreme nanohardness and heat resistance IDEAL FOR CUTTING: Acrylic / Plastic, Epoxy, High Density Polyethylene (HDPE), High Pressure Laminates (HPL), compatible with Lucite, PVC, Sign Foam, Soft Wood SOLID CARBIDE LOW HELIX SPIRAL FINISHER BIT DIMENSIONS: 51631-K, 1/4 Dia x 7/8 Cut Height x 1/4 Shank x 3 Inch Long x 3 Flute Up-Cut; three keen edges and a gentle 10º helix leave a smooth finish SOLID CARBIDE: Amana Tool solid carbide router bits ensure long-lasting cutting edge performance and tool life; delivering repeatable precision for a variety of cutting projects INDUSTRIAL-QUALITY TOOLS: Amana Tool is an industry leader for over 50 years specializing in industrial quality cutting tools for the woodworking, plastics, aluminum, composite, and metal UPC 738685551639 ASIN B07YVG8SN3 Cut Type Up-Cut Brand Name Amana Tool Unit Count 1.0 Count Part Number 51631-K Manufacturer Amana Tool Item Diameter 0.25 Inches Material Type Wood Cutting Length 0.86 Inches Cutting Diameter 0.25 Inches Number of Flutes 3 Included Components Spiral Router Bit