Features:Made of hardened materials, these tools are very durable and not easy to wear.Heat resistant coating prevents build-up of sawdust, resin and pitch.Sharp cutting edge would improve working efficiency and product quality. Comes with various size of bearings for different dimension needs.Suitable for MDF, solid wood, particle board, plywood, etc.Usually use on electric wood routers or engraving machines for wood edge finishing.Specifications:Material: YG6X AlloyColor: As Picture ShownBearing Size: 3/8''(9.52mm), 1/2''(12.7mm), 5/8''(15.9mm), 3/4''(19.05mm), 7/8''(22.2mm), 1-1/8''(28.6mm)Cutting width: Approx. 12.7mm (1/2'')Blade height: Approx. 55.5mm / 2.18''Shank Diameter: Approx. 6.35 mm (1/4'')Package Weight: Approx. 138gPacking Included:1 x Set of Router Bit with Bearings.Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.