The 18in. JET ZX Series large spindle bore metal lathe is designed exclusively by with a 3 1/8in. bore spindle supported by two tapered and one ball bearing. Chrome molybdenum headstock gears are hardened, ground and shaved. Universal gearbox allows inch, metric, diametric and module pitch threads, no change gears required. Carriage features one-shot lubrication and Turcite B on bed sliding surfaces. Please closely verify all details prior to confirming this order. NOTE: Because this made-to-order item is manufactured exclusively to match your specifications, it is not eligible for cancellation, refund or return once the order has been placed.