1、WITH TOP BEARING: Professional flush trim milling cutter with 1/4in shank, 1in cutting length. Individual ball bearings are fitted with a forced steel ring at the tip of each bit to ensure smooth operation 2、STRONG MATERIAL: Industrial quality flush edge milling cutter is made of solid carbide with nano blue coating with high hardness and heat resistance, enabling the cutting edge to maintain vital sharpness and lubrication, which produces the highest quality cutting results 3、INCISIVE AND DURABLE: Up to 2.5 times longer service life than uncoated bits. Flush milling cutters are sharper than traditional flush milling cutters and remain incisive longer 4、MATERIAL FOR USE: 1/4in Flush trim milling cutters that cut up and down are suitable for a wide variety of woods such as plywood, oak, MDF and any hardwood work for a long life 5、WIDELY ADAPTED: This flush trim router bit is suitable for CNC milling cutters and any cut in milling cutter with 1/4in chuck