DAEGUN is one of the leading manufacturers and exporters specializing in top quality ROCK DRILLING TOOLS in Korea. We have engaged in manufacturing and exporting many kinds of rock drilling tools such as Integral Drill Steels, Extension Rod, Coupling Sleeve, Shank Adapter and Button Bits etc.. We are exporting our products to over 50 countries with very good reputation. Our web site is (http://www.airhammer.co.kr) Please visit there for further information about our product.