... Ltd. Was established in 1998,located in Cangzhou which is in the industrial zone of Cangzhou city ,and enjoys ... : metal sealed(HJ) rubber sealed(HA) not sealed(W)11,Formation: soft formation, soft to medium hard formation ... salts and soft li mestones. Size and IADC available: 3 3/4" to 26" IADC 415,435,445,417,437,517 ... ,737512,522,532,612,622,632,7326. How to ship the bits to your country? You ...