Rockwell hardness standard block of 60-70 HRB Annulus Type by MXBAOHENG at Chicago Lighting Design. MPN: C-59. Hurry! Limited time offer. Offer valid only while supplies last. The product usually takes 7--13 business days to arrive to your hand after your order is confirmed Description Appearance：Annulus Size：60×10×10mm Weight: 0.2kg NOTE: we will send the product to you as soon as possible If you have any questions , please feel free to contact us
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