Countersink Cage Thread Size 1/4 In.-28 Shaft Style Tri-Flat Shaft Dia 1/4 in Removable Foot Plate Yes Foot Plate Material Nylon Foot Plate Size Wide Cutter Dia 3/4 in Incremental Depth Adjustment 0.0005 in 10 000 RPM Max RPM Shaft Swivel Angle 0 Degrees Overall Length 3 3/4 in Features 1-1/4 in O.D 1 3/16 in