SPECIFICATION. 1-1/2" cutting length; 1/4" cutting diameter; 1/4" shank; 3" overall length, can be used on routers with 1/4" collect; UNIQUE DESIGN. O-Flute design spiral router bit ensures efficient chip removal, reducing clogging, providing smooth cutting performance, and extending tool life; APPLICABLE MATIARIALS. Suitable for a variety of materials, acrylic, plastic, aluminum, copper, and wood; Used for Carving, Cutting, Slotting, Milling, Hollow Cutting; WIDE APPLICATION. Perfect for CNC routing, hobbyist projects, and sign making with plastic and non-ferrous materials. DURABLE AND PRECISE. Single flute router bits, high-quality construction ensures durability and precision, allowing for consistent and accurate cuts. SPETOOL SERVICE. Good quality, cost-effective, efficient after-sales service, etc. Solid Carbide Spiral Router Bit with 1/4inch Shank and 1/4 inch Cutting Diameter, 1-1/2 inch Cutting Length, 3 inch for Total Length;Flat Top with Single Flute, Material: HRC55 Carbide;Used for Carving, Cutting, Slotting, Milling, Hollow Cutting in Materials Like Hardwood, Medium Density Board, Nylon, Resin, ABS, Acrylic, PVC, MDF, etc;The Design of Single Flute, Larger Spiral Chip Space and Mirror Polishing of CNC Router Bit Makes Non-stick Crumbs, Smooth Cutting and Fast Chip-removal;There are 1 Pieces of CNC Router Bit In One Package, Coming with Storage Case