Features:Made of hardened materials, these tools are very durable and not easy to wearHeat resistant coating prevents build-up of sawdust, resin and pitchSharp cutting edge would improve working efficiency and product qualityComes with various size of bearings for different dimension needsSuitable for MDF, solid wood, particle board, plywood, etc.Usually use on electric wood routers or engraving machines for wood edge finishingSpecifications:Material: Cemented CarbideColor: Silver+YellowShank Diameter: 1/4"Cutting width: 1/2"Router Bit Size: 51.5 x 29.5mm/2.02 x 1.15"(L x Dia)Bearings Bit Size: 64.5 x 28.6mm/2.53 x 1.12"(L x Dia)Bearing 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'')Blades height: Approx. 55.5mm(2.18'' )includes:1 x Router Bit with 7 Bearings