Taiwan SU SUS standard straight shank twist drill precision mainly by the working part, neck and shank composed of three parts. Responsible for cutting and guide the work of some of the work of holding the drill shank is the part used to deliver torque. Twist is relatively fixed by its rotation axis to drill parts of the hole cutting tool. Because of its content and shape into a spiral flute is named after cannabis. Twist drill can be gripping for manual, electric hand-held drilling tool or drilling machine, milling machine, lathe used machining center as well. Taiwan SU SUS standard straight shank twist drills of precision high-speed material made of tool steel and carbide. 

 Shenzhen Longsheng hardware firm is a business of mold parts, mold material, machine tool accessories for professional company, is the industry's most influential suppliers. East Development Agency of Japan companies spring, Datong mold and a variety of domestic and imported spring round wire spring, Germany HASBERG, H + S, YCT precision pads, safety devices, steel wire imported from Japan, grinder, band saw plate NACHI, NCC, FUNASAW, Thread jacket, Japan, opening and closing resin, fine mechanical parts and so on show. The company has a huge national sales network, improving the logistics distribution center, good after-sales service system and professional exhibition center, a large wholesale store. We have been adhering to the "professionalism, integrity and development" business philosophy, you are "the most stable quality, best price, fastest delivery, the most sincere service." Warmly welcome overseas businessmen for long-term business cooperation, create brilliant win-win situation! 
 Shenzhen Longsheng hardware firms to carry out online direct marketing has always adhered to the "professionalism, integrity and development" business philosophy, adhere to the "most stable quality, best price, fastest delivery, the most sincere service" to customer service purposes, has been a profound recognition of our customers. Hope to work with the best distributors around the country or the hardware store, the factory building long-term stable relations of cooperation. Our business philosophy: the company with customers, suppliers, employees, the pursuit of win-win co-existence and sustainable development. Quality: the pursuit of quality excellence, continuous improvement to meet customer requirements. Service: honest and trustworthy, prompt delivery and good service.