sleeve and core pin,ejector sleeve pin,precision core pins Material:SKD-61.SKH-51.SKD-11 Hardness:55-58HRC MOQ:unlimited sleeve and core pin,ejector sleeve pin,precision core pins1.Material:SKD-61.(JIS),H13(AISI),1.2344(DIN)Hardness:55-58HRCTolerance:+/-0.002MOQ:unlimitedStandard:"FUTEBA"&"MISUMI","HASCO","D-E-M"&"DANLY" 2.Material:SKH-51.(JIS),M2(AISI),1.3343(DIN)Hardness:60-62HRCTolerance:+/-0. ...