To the best of our knowledge all details listed below are deemed correct. It is the buyer's responsibility to confirm all details and we encourage an inspection of the machine(s) and accessories prior to purchase. Citizen CDF-901 ID Tool Holder w/ Sub Spindle Machining for M20/32 Diameter: 1" Drill Depth: 2.875" *For Citizen M20/32 with Y-Axis (Not Intended for Non Y-axis)