Have a good day! We are Hebei Zhankui Drill Equipment Co., Ltd from China, a company specializes in drill bits and stabilizers for water well, oil field, construction, geothermal, directional boring, and underground foundation work all over the world. Our purpose is to sell the best quality drill bits at the lowest possible prices.Whether it be seal bearing, or regular bearing. We aslo buy scrap or used PDC and TCI drill bits worldwide , pls contact us if you have access to scrap drill bits.As you know our company deal in drill bits professionally not only export drill bits but also buy scrap bits.We believe that we have chance to enter into longterm and mutual beneficial business relationship. Look forward to your reply Best regards, Yours faithfully Andy Tel:+86-317-3212988 Fax:+86-317-3212998 Mobile phone:+86-13832700307 Webisite:xxxxx