sds hammer drill bit 5,6,8,10 competitive price sds-plus hammer drill bit set40Cr steel + YG8carbide tip(5,6,8)*110, 10*160 EAGLE TOOLS has over ten years history of manufacturing the high-speed steel twist drill. It is specialized in producing 4241, 4341, 9341, 6542, M35, M42 high-speed steel rolling drill and fully ground drill.