Jet Tools Cast Iron Head Large quill allows greater accuracy Head casting features a permanently lubricated ball bearing spindle assembly using four heavy duty ball bearings mounted in an enclosed quill for extended life Table tilts 45 Massive T-slotted production table Large ground steel column diameter for maximum head and table support 4-3/4 stroke for deep hole applications Accurate depth stop for precise hole depths Includes 5/8" chuck and arbor Specifications Stock Number:    354402 Model Number:    J-2550 Drilling Capacity Cast Iron:    3/4" Drilling Capacity Mild Steel:    5/8" Column Diameter:    3-5/8" Distance Column to Spindle:    10-1/2" Range of Spindle Speeds:    150-4200 RPM Spindle Travel:    4-3/4" Spindle Distance to Base:    43-1/2" Spindle Distance to Table:    24" Table Size:    18-1/2 x 16-1/2" Table Travel:    21-1/2" T-Slots Number and Size:    3 x 1/2" T-Slot Centers:    4" Work Table Weight Capacity: 66 lbs. Spindle Taper:    MT-3 Base Dimensions:  22-3/4 x 17-3/4" Base Work Table:    13 x 14-1/2" Motor:    1 HP; 1 Ph; 115/230V; Prewired 115V Overall Dimensions:    33-1/2 x 18-1/2 x 67" Net Weight:    304 lbs. " Jet J-2550 20" Metalworking High Capacity Drill Press 354402