Uniquely designed exclusively by JET, the GH-1440ZX 3 1/8in. bore spindle is supported by two tapered and one ball bearing. Chrome molybdenum headstock gears are hardened, ground and shaved. Universal gearbox allows inch, metric, diametrical 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.