Our products are good in quality and low in price .For button bits, we can offer you: bit diameter(D):32mm嚚嚙?5mm; Taper degree (a):6, 7, 9, 11, 12; socket diameter (d):19mm, 22mm, 25 mm. special s ... ...
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button bits, cross bits, diamond core bits, reaming shell, rock bolt ...
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