... 1,Materials: HSS M2, SKH9, ASP 2,Tolerance: less than 0.005mm 3,Working life: 20,0000times 4,8-10 work ... ,ASP23,ASP30...Surface TreatmentTIN TICN TIALN CRN ..Length Tolarance+/-0.01Diameter Tolerance+/-0.002HardnessHRC64°-69°Packing Quantity10Weight2.00Place Of OrignDongguan, China(Mainland ... of products you produced3,The products size ,for example:M2.0,D 14*25.4,The surface coating type ,for example ...