Uxcell a14101300ux0197 2pcs 3" Long 2 Edges Flush Trim Router Bit 1/4" x 1/4" for Carpenter (Pack of 2) Product Name : Flush Trim Bit; Standard : 1/4" x 1/4";Bearing Diameter : 7mm Shank Diameter : 6.35mm / 1/4";Cutting Diameter : 6.35mm / 1/4" Cutting Depth : 30mm / 1.2";Total Length : 76mm / 3"