Features: Made from cemented carbide for high hardness and long service life. These accessories make your work more efficient. Usually use on electric trimmers or engraving machines for wood slotting. Used for hardwood, cork, synthetic board wood processing. An essential tool for woodworkers, wide applications for slotting, engraving, cutting, milling, etc. Specification: Material: Cemented carbide Weight: 88g/3.1oz Specification & Color: 1/4*1/2*11.9 blue 1/4*1/2*20 yellow 1/4*1/2*25 blue (Optional) Package List: 3 x Router Bit Package List 1Made from cemented carbide for high hardness and long service life. 2These accessories make your work more efficient. 3Usually use on electric trimmers or engraving machines for wood slotting. 4Used for hardwood, cork, synthetic board wood processing. 5An essential tool for woodworkers, wide applications for slotting, engraving, cutting, milling, etc.