Feature:1. Specifications: Compression flush trim router bit, double spiral design, with 1 or 4 inch shank, 1 inch cutting length, 1 or 2 inch cutting diameter, compression cutting, top and bottom bearing2. Sturdy Structure: Using high strength steel shank and tungsten steel carbide edges, this flush trim router bit has high hardness, impact resisting, and provides long lasting durability and performance3. High Performance: Compression flush trim router bit has the advantages of long lasting sharpness, fast chip removal, less heat accumulation, cleaner cutting edges, and longer service life4. Applicable Materials: Spiral router bit is very suitable for trimming particleboard, medium density fiberboard, density board, melamine board, veneer plywood (laminated board), solid wood, and more5. Wide Applications: This double spiral router bit is suitable for any flush trimming situation and is a practical choice for pattern or template work. It can be installed on bench or handheld routers for useSpecification:Item Type: Flush Trim Router BitMaterial: 45 Steel, Tungsten CarbideShank: 1 or 4 Inch ShankCutting Length: 1 InchCutting Diameter: 1 or 2 Inch.Package List:1 x Flush Trim Bit1 x Storage BoxNote:After each use or after working continuously for half an hour, please remove the sawdust covering the flush trim router bit to extend the lifespan.