1.Using new materials and advanced sintering technology, welding technology. Significantly improve the sharpness and endurance of the drill bit! And, the rate of tooth loss is extremely low! Supporting the use of desktop drilling and hand-held drilling machines. It is widely used in the fields of building's upper and lower drainage pipe, highspeed railway,bridge, air conditioning installation, heating pipe installation, firefighting pipe installation 2.Dry-wet drill base adopts rotary thread design, which can be used for dry and wet drilling, so it is convenient and flexible, and applicable to a wide range of working conditions. 3.It is specially designed for the working condition which is inconvenient to add water.The base adopts the design of opening with thread, which is more convenientforchip removal and heatdissipation. 4.It is suitable for the drilling of mant kinds of materials such as granite,marble,ceramic,etc.Provide fast speed and long life. The different length is designed to facilitate the drilling of different depth It is suitable for the operation of high-grade reinforced concrete under complex working conditions. Compared with ordinary drill, this product has the advantages of strong wear resistance, good hand feelingand fast speed of penetrating reinforcement. specifications(mm)  cabinet minister (mm)   specifications(mm)  cabinet minister (mm)   specifications(mm)  cabinet minister (mm) Diameter Total Length Diameter Total Length Diameter Total Length 018 370/450 083 370/450 0220 350/450 020 370/450 089 370/450 0230 350/450 022 370/450 096 350/450 0245 350/450 025 370/450 0102 350/450 0254 350/450 027 370/450 0108 350/450 0270 350/450 030 370/450 0114 350/450 0300 350/450 032 370/450 0116 350/450 0325 350/450 036 370/450 0120 350/450 0350 350/450 038 370/450 0127 350/450 0400 350/450 040 370/450 0132 350/450 0450 350/450 044 370/450 0140 350/450 0500 350/450 046 370/450 0152 350/450 0550 350/450 051 370/450 0159 350/450 0600 350/450 056 370/450 0162 350/450 0650 350/450 063 370/450 0168 350/450 0700 350/450 066 370/450 0180 350/450 0750 350/450 071 370/450 0188 350/450 0800 350/450 076 370/450 0200 350/450 01000 350/450 Installation Procedures For Handheld Drill And Drill Bit Good Quality Low Price Product Application Com Pany And Factory Show