... , ball guide(Model: GGB) and roller guide(Model: GZB), and accuracy with 2, 3, 4, 5 grades. Grade 5 is the ... assembled for the shipping. Characteristic: Heavy load, low noise, high speed, high accuracy; Normally used for machining center, grinding machinery, heavy machinery etc ... :A6267,NO.Foutteenth tariff-free zone,Qingdao develpment zone,China. High Quality Linear Guide