BIT SPECIFICATION Bit Type: 12-1/4" GS1604TZ IADC Code S223 Blade 4 Cutter Size (mm) 16MM;13MM Cutter Qty 1637;1333 Nozzle Qty 6NZ Gauge Length (mm) 72 Connection 6-5/8" API REG N.W./G.W. (KG) 97/122 Nozzle Size(inch) 22/32 GREAT PDC bit Advantage   Equipped for Performance Great PDC Bits are equipped with 1.High Abrasion tungsten carbide material, Hardened Alloy Steel base material 2.High performance PDC-Cutters 3.Carbide and Diamond gauge protection 4.Carbide/Diamond Shock Studs 5.Threaded or Plain Carbide Nozzles for Flushing