Compression flush trim router bit with a double spiral design and and bottom bearings for precise flush trimming tasks. Specifications: 1/4 inch shank; 1 inch cutting length; 1/2 inch cutting diameter; double spiral design; and bottom bearings. Sturdy construction: strength steel shank and tungsten steel carbide edges for durability and impact resistance, delivering long lasting performance. performance: Long lasting sharpness, fast chip removal, reduced heat buildup, and cleaner cutting edges for efficient woodworking. Applicable materials: Ideal for trimming particleboard, medium density fiberboard, melamine board, solid wood, and more. Use scenarios: Flush trimming cabinet doors and drawer fronts with laminated or veneered panels to achieve precise, seamless edges. Edge trimming and finishing of solid wood or MDF panels for cabinetry and shelving, ensuring clean, tight joints. Attaching or trimming melamine or plywood edges on project parts such as countertops, backs, or panels where a smooth, flush edge is required.