Overall Diameter: 1/2"Overall Length: 2-3/4"Cutting Edge Length: 1-1/4"Shank: 1/4"Bearing Diameter: 1/2"Flush Trim Bits Are Used For Laminate Work Or For Template And Pattern WorkTop 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