Overall Diameter: 1-1/8"Overall Length: 3-1/2"Cutting Edge Length: 1-1/2"Shank: 1/2"Bearing Diameter: 1-1/8"Flush Trim Bits Are Used For Laminate Work Or For Template And Pattern WorkDouble Flute Design Allows For A Smoother FinishTop Mounted Ball Bearing Rides Against Template For Pattern RoutingMicrograin Carbide Tips Provide Superior Wear Resistance And Long LifeShielded, Compact Ball-Bearing Pilot Guides Bit Along Edge Of Material