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This series of PDC diamond drill bits is specially designed for drilling hard rocks of IV-VII hardness categories. These bits use cutters with increased impact and abrasion resistance. The specially designed bit profile and optimally selected number of blades ensure maximum cutter overlap, protecting the bit from premature wear. The spiral shape of the blades is used to improve stable bit behavior at the bottomhole. The set of design solutions implemented in these bits allows achieving maximum speed, penetration rates, and excellent controllability when drilling wells. Main specifications: Country of manufacture: China; Bit diameter: 153 mm; Number of blades: 3 pcs.; Flushing (blowing): combined; Bit type: diamond