1:Precision grade C2 C3 C5 C7 2:Good performance and running smoothly with free noise 3:Soon delivery 4:Competitve price Character1.high precision,good quality,reasonable price 2.strictly quality control ,e300 are according to hiwin ,tbi ,nsk ,thk,abba international standard3:best raw material ,running smoothly and free noise ,long life working4.near port, short delivery Introduction Ball screw ...