Bit specification Bit type 8-1/2â?� gs1905tz Iadc code S323 Blade 5 Cutter size (mm) Φ19mmï¼?î¦16mmï¼?î¦13mm Cutter qty Φ19ã?20ï¼?î¦16ã?14ï¼?î¦13ã?28 Nozzle qty 6nz Gauge length (mm) 100 Connection 4-1/2â?� api reg N.W./g.W. (kg) 57/72 Nozzle size(inch) 14/32;15/32 Our service: 1ã?�24 hour uninterrupted serviece, answer your questions in a timely manner 2ã?�warm welcome guests to visit 3ã?�one of the largest manufacturer and supplier in asia.High technology, high quality 4ã?�flexible production 5ã?�sincerely cooperate with you 6ã?�service to customer satisfaction -