We are a factory to product the HSS TWIST DRLL ( roll forged black finish, edge ground white drill and Tin coated ). We are glad to introduce our factory to you. We sure we can supply the best goods and price to you. In fact, now we have became the many Famous Brand in the world of point supplier like as, BLACK & DECK, BOSCH, RYOBI and so on. Meanwhile, we have passed ISO quality system certificate. Our mine products as following:1) Hss drill bits series ( Black finish, Tin coated)Material: HSS#4341, HSS#9341, M2, M352) Wood working drill bits series3) Masonry drill bits series4) Sds-plus drill bits5) All kinds of combination drill bits6) Diamond saw blade series By the way, My brother, he product the screw bits and bit set. his factory name Zhenjiang District Tiandun Tool Factory, His name Wang BingjunNow if you have any information about business about business lines, pls feel free to contact with us. We are right here to serve you better!Sincerely looking forward to your close cooperation!With warmest regards David Cai DANYANG CITY RUILI TOOLS CO., LTDHOUXIANG TOWN DANYANG CITY JIANGSU PROVINCE CHINATEL: 86-511-86316461FAX: 86-511-86325738MOBILE: 86-13951271640E-MAIL: