... ground ball screw Rolled or milled thread Diameter:40mmLead:5mmLength:as customer's requestAccuracy:C5,C7Nut:single ,Sizes of screw shaft ... when we see you message.Delivery timeAccording to the quantity,as sample order usually 3-5days,bulk order 10-15 dayspackageAs ... , we will sent by the international express, like DHL,TNT,As large order, we always sent by sea, packing by wooden ...