The Dormer H851 HSS 12 drill exchange head holder with internal cooling is a highly developed tool designed for precise drilling in various materials. Featuring a cylindrical shank and flange, this drill body provides a stable connection and enables effective power transmission during the drilling process. The internal cooling ensures that the temperature remains controlled during use, which extends the tool's lifespan and improves machining quality. The drill exchange head holder is suitable for use with HYDRA P, M, and K drills and meets DORMER standards for 12xD drilling. The combination of high-quality HSS steel and a bright nickel plating ensures high wear resistance and improved surface quality.

• Suitable for 12xD drilling with HYDRA P, M, and K diameters ranging from 20.64 to 21.5 mm
• Cylindrical shank with flange for stable connection and power transmission
• Internal cooling for temperature control during the drilling process
• Made from high-quality HSS steel with bright nickel plating for increased lifespan.