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TCI tricone bit, tci rollerBits,roller bit,steel tooth roller bit,TCI roller bit,TCI tricone bit 1.Cutting Structure The durability of premium tungsten carbide insert is improved with new formulas and new techniques and new techniques.2. Gauge StructureGauge protection with gauge inserts on the gauge surface of the cone, tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capability.3. Bearing Structure Air cooling roller bearing package. Balls lock the cone, which reduces the probability of cone-dropping to minimum.4. Product ApplicationIt is suitable foroil, water well. miningapplications. Condition : 100% New IADC code : 437,517,537,617637 Seal type : Metallic seal Bearing type : Sealed Journal bearing Nozzle quantity and nozzle cap size : three nozzle andthe size is 18/32 Connection joint Pin size 4-1/2” The exact size of the bit is 251mm Warranty : life hours is 200h and the meter is 1000m contact: Lydia Tel:0086-18733731021 sizeBit TypeIn.mm6152.4136, 1276 1/2165.1126,1277 1/2190.5126, 136, 217, 2278 1/2215.9114, 124, 126,1279 1/2241.3126, 1279 5/8244.51279 7/8250.812712 1/4311.1114, 126, 12713 5/8346.0117, 126, 12714 3/4374.612415381.012415 1/2393.712417 1/2444.5114, 117, 124, 126, 21622558.812424609.612426660.4114