Wall hole reaming holes for concrete

About Product:Carbide wall opened hole device used quality alloy welding and into, for brick walls structure buildings of opened hole job, by oriented drill, distribution Shang dedicated connection Rod using (as figure), and connection to different page handle Department structure of electric hammering hole, is installation, and loaded Huang industry of new tool; hollow electric hammer drill of connection rod, by Qian page handle Department structure selected with, length by user needs decided, quality sophisticated, products.