Barber-Colman Type A 16" X 46" Gear Hobbing Machine Hole In Spindle: 3" Work O.D.: 16" Max. Hob Slide Travel: 46" Max. Coarseness: 6" Dia. Pitch Max. Helix Angle (L To Right): 45 Degrees Max. Number Of Teeth: 5 Min.; 600 Max. Hob Diameter & Length: 5" Dimensions: 51" x 76" x 92"H Weight: 6,200 lbs Equipped with: Complete Set of Change Gears Operations Manual Misc. Hobs Available at Extra Cost