... from us. 1. TCT core drill, 19.05mm universal shank for clamping strength and finish. 2. Applicable to ... as steel structure project, railway traffic, bridging, shipbuilding, machine manufacture, aviation and spaceflight. The information of packingMain marketOur ... structure project, rail way traffic, bridging, shipbuilding, machine manufacture and so on. EquipmentEnterprise cultureCertificate