Zhejiang Zhongtian Tools Corp. Ltd. specializes in developing and producing all kinds of hole saw(HSS hole saws, TCT hole saws, Bi-metal hole saws, diamond hole saws) and hammer drill bits(SDS plus,SDS max,Hex,Spline) etc. We possess digital mequipments and have attained ISO9001:2000 certification. 20 years' produce experience and over 5 years' exporting history made us become a extreme professional manufacturer. Our products are popular all over the world, especially in Europe and North America. We faith in offering you the best products as well as the most satisfactory service, and we sincerely hope to have opportunities of cooperating with you in win-win situation. For further information, please feel free to contact us. [Details]