Description: Balance: +/- .003" tolerance (allowing smooth operation at high RPMs) Cutter: CNC ground to a 600 grit, mirror-like finish Hook & Shear Angles: High hook & shear angles allow cutters to slice smoothly into stock producing clean, splinter free Bearing: Totally enclosed & lubricated Coating: Baked on heat resistant coating prevents build-up of sawdust, resin, and pitch Material: alloy Size: As shown Quantity: 4pcs Package Includes: 4 x Tongue & Groove and V-notch Router Bit