Description: Trepanning more smooth,less noise Sharp edge,high hardness,accurate positioning,high precision,smooth cutting,impact resistance,high toughness Selection of high quality alloy blade,make blade more sharp and durable Blade Industrial grade micro grain carbide Hook & Shear Angles High hook & shear angles allow cutters to slice smoothly into stock producing clean, splinter free Coating Baked on heat resistant coating prevents build-up of sawdust, resin, and pitch Specification: Material: Alloy Diameter of Router Bit: approx. 13mm/ 0.5'' Overall Height of Router Bit: approx. 90mm/ 3.54'' Color: as shown in the display pictures Package Includes: 5 Pieces Router Bits