... years experience 1,Name: Adjustable screw for sewing machine;adjustable screw;screw for sewing machine 2,For the similar screw,what can we ... the tolerance Roundess0.002mmCylindricity0.003mmRoughnessRa0.32Straightness0.01/200mm 3,How about the packing details?Plastic bags inside,then carton ... delivery?(1),Delivery port:ShangHai/NingBo(2),Delivery way to avoid the anti-dumping5,Why should you choose us ...