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The drill bit is surrounded by a transparent protective cover that can not only stabilize the fuselage and vertical working plane,but also prevent foam splashing during the operation of looking up.The electric drill can move vertically on the core structure of the electric drill after adding rotating shaft,Become a small bench drill.There are pressure speed control switch and auxiliary depth measuring device at the bottom of the fuselage.The harder the pressure is,The faster the speed will be.
Macau University of Science and Tec
macau, Macau SAR China
Macau University of Science and Technology