0.11" to 1" (Tapping Range) Brand New Baileigh Double Arm Articulated Air Powered Tapping Machine, Mdl. ATM-27-1900, MFG Number BA9-1000327, Air Tapping Spindle, Ergonomic Design, Cast Iron Swing Arm, Twin Parallel Arms, Dual Stretch Arm, Slanted Arm, Tap Holders, Drill Chuck, Pneumatic Motor, Table Mount System, #SMATM271900