Features： 1、Clean Without Debris: The cutter can cut into the materials smoothly, resulting in clean, no debris, easy to use 2、Anti Kickback Design: Rugged hardened 45# steel material body, come with anti kickback design, more stable and reliable 3、CNC Ground to 600 Grit: Milling cutter is CNC ground to 600 grit, which is as smooth as a mirror, which improves working efficiency 4、4 Kinds Cutting Lengths: The router handle size is 8mm, and there are 4 kinds of blade cutting lengths to choose, can meet your different using needs 5、 Performance: Finger joint router bits come with stable structure, performance and long service life Specification： Item Type: Finger Joint Router Bit Commodity Material: 45# steel Tool Handle Size: Approx. 8mm / 0.3in Package List： 1 x Finger Joint Router Bit