This bottom bearing compression spiral flush trim router bit is designed for precise and efficient edge trimming. Made from solid YK20 tungsten carbide, it ensures long-lasting durability, sharpness, and smooth cuts, making woodworking tasks easier and more efficient.Features:✅Extra-Large Cutting Surface: With a 1/2" diameter, this bit removes material quickly and efficiently, improving productivity compared to smaller diameter bits.✅Compression Spiral Cutting: The spiral design cuts both upward and downward simultaneously, efficiently removing sawdust while leaving a smooth, nearly mirror-like wood surface, reducing sanding time.✅Durable Material: Crafted from YK20 tungsten carbide with a strong steel shank, offering high hardness, wear resistance, and long service life.✅Usage Tips: Remove wood chips after each use or after continuous operation of 30 minutes to maintain optimal performance and extend tool life. Specifications: Size:1/4" Shank × 1" Cutting Length × 1/2" Diameter × 3-1/5" Overall Length1/4" Shank × 1-1/4" Cutting Length × 1/2" Diameter × 3-1/2" Overall Length Material: YK20 Tungsten Carbide Cut Type: Compression-Cut