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 Extra Wide Cutter Dia 1 in Incremental Depth Adjustment 0.0005 in 10 000 RPM Max RPM Shaft Swivel Angle 0 Degrees Overall Length 3 3/4 in Features 1-7/16 in O.D 1 7/16 in