feilong drilling spare parts company was established in 1983. our company is an importer & exporter and distributor of new, overstock and re-used tricone drill bits and drill pipes located in china. our company wants to buy used and scrap tci bits and pdc bits which used on the oilfield and water well, the sizes: 5 7/8"--17 1/2", please, send us your commercial offer or demand, if available please attached jpg pictures as well. please, do not hesitate to contact us if you need any other details. mail:zhangyl123@163.com skype: lilylily9571