Amana tool 57185 Carbide Tipped Super Flush Trim 3/4 D x 1-1/2 CH x 1/2 Inch SHK x 4-Flute Router Bit

4 flute designfor a smooth chip-free cut Industrial quality Carbide tipped Chipping is virtually eliminatedAMAX Extended Life Features:  200% longer life time even when working with abrasive materials  Superior geometric design  Advanced grinding technology that improves the carbides' resistance to wear  Super clean cutsOptional Delrin replacement bearing use #47709, for a smooth cut finish when trimming solid surface materials. Feed rate is reduced, but chipping is virtually eliminated.