Package Included: 6pcs 8mm round router bit, size of 19.05mm/22.2mm/25.4mm/28.6mm/31.7/38.1mm. Perfect for stencil cutting work and other DIY projects. Wide Application: Router bit for wood, particle board, MDF, and various wood composite materials (avoid cutting metal materials such as steel, iron). High Quality: Router bits made of ground tungsten steel, sharp and durable. The shank is made of 45 gauge steel for high strength and resistance to deformation. Long Service Life: Router Bits with advanced spraying technology, these tools are both beautiful and corrosion resistant and have a longer service life. Applicable Models: Quarter round router bit for finishing wood edges, for edge deburring, suitable for all types of cutting and engraving machines.