... , heel and shirttail protection Payment terms:T/T, L/C are acceptable.Lead Time for MOQ: Within 3 days after ... deposit or valid L/C opened.FAQ(Frequently Asked Questions)1. How to place ... /2”),508mm(20”),558mm(22”),609.6mm(24”)660.4mm(26”)Available models: Steel tooth(IADC)111, 121,131117,124, ... 617,627,637,737512,522,532,612,622,632,7323 cone rotary rock bit 4 5/8"IADC537G