Retract thread cross bits - Top-hammer drilling -
Retract thread cross bits. Retract thread cross bits are usually used for very hard and abrasive rock formation. Thread size: R25, R28, SSR28, R32, SSR32, R35, SSR35, R38, T38, T45, T51. Diameter: 38mm to 127mm. Submit Successed ! We will contact with you within 12 hours, thanks for your inquiry.
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