Package includes: 3 x 6.35mm shank flush trim router bits in 3 sizes, each for 11.9mm/20mm/25mm blade depth. Main parameters: Blade depth : 11.9mm, 20mm, 25mm; blade diameter: 12.7mm); shank diameter: 6.35mm. Quality Material: Made of carbide with good wear resistance and very durable life, heat-resistant PTFE coating to prevent corrosion accumulation of wood chips, resin and asphalt. Main function: cutting, edge processing and grooving, three-dimensional and grooved clearance angle. Wide applications: compatible with the engraving machine and trimmer for woodworking, hardwood, particle board, MDF, acrylic Applicable models.