Specifications: Maximum Gear Pitch Diameter: 20" Cutter Diameters: 9", 10.5", 12",14",16", 18" Whole Depth: 1.250" Root Angle: 60 to 80 deg. Face Width: 3.0" Extreme Ratio (Minimum): 2.25 to 1 Number of Teeth: 20 to 75 Diameter of Taper Hole at Large End: 3-27/64" Cutter Speeds (Per Minute) for Roughing: 15.6' to 87.7' Feeds (Seconds Per Tooth) for Roughing: 3 to 35 Cutter speeds (Per Minute) for Finishing: 6.8' to 20.5' Feeds (Seconds Per Tooth) for Finishing: 3 to 9 Floor Space: 118" x 86.5" x 70" H Weight: 17,500 lbs