'Countersink Cage, Thread Size 1/4 In.-28, Shaft Style Round, Shaft Dia. 1/4 In., Removable Foot Plate No, Foot Plate Material Steel, Foot Plate Size Standard, Cutter Dia. 3/4 In., Incremental Depth Adjustment 0.0010 In., 3000 Max. RPM, Overall Length 3-9/16 In., Features 1 In. O.D, 1-1/4 In.'