... Pieces/month Delivery Time within 7 work days1.I am Olivia at your service at any time2.Hejian Huanyu ... ,Roller Cone Bits ,matrix body PDC bits,steel body ...3.API Tricone Rotary Bits1,Types: steel tooth tricone bit ... , salts and soft li mestones. Size and IADC available: 3 3/4" to 26" IADC 415,435,445,417,437,517 ... we can provide: 60mm,65mm,76mm,93mm,95mm,98mm(3 7/8”),101.6mm,114mm,118mm,120mm,127mm(5”) ...