SPECIFICATION. Spiral Router Bits 1" cutting length; 1/4" cutting diameter; 1/4" shank; 2-1/2" overall length, can be used on routers with 1/4" collect; COATING. The new coating provide up to 2.5 times life than the uncoated, make the bit sturdy durable, sharp efficient, smooth stable 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 Router bit