Diamond core drill is a new tool for drilling holes on reinforced concrete,rocks,ceramics,glass and fire-proof materials.it features in high-efficiency,smooth hole-wall and accurate drilling.this machine is widely used in building construction, airport, runway construction, water, electricity, heat and gas installation engineering as well as railways and bridges construction. Our diamond core drill strictly conforms to national standard,this machine not only adopts bulit-in friction clutch but also has soft start, constant power and over current protection function,Besides,our core drill is characterized by such characters as moving flexibility, economy and durability, safety and reliability, etc