Hand Drill SBZ-1 type hand drill pull double reed palm hand drill drill drill portable hand drill steel drill hole fill Hand rail drilling machine drilling machine is mainly used in various large-scale steel engineering companies (such as railways, bridges, shipbuilding etc.), can not be used when drilling or drill for drilling. Drilling diameter less than 40mm. How to use the hand drill? ? ? ? First, the library installed hand drill with a head plate drilled six holes froze, then install the bit, the iron rack upright, that side rails with hooked iron shelves hold him down, with one end of the lever tipped drill against the shelf above iron screws (Note: The above large screws can be adjusted), fixed after the drill with the side rail alignment, hand drill down shaking hands, you can drill. SBZ-1 lever drill Model SBZ-1; weight 6.0kg; Description: Drill reprovision of purchase; supporting lever diamond drill φ13.5 φ15.5 lever lever lever diamond drill φ17.5 φ19???. 5 lever drill? φ21.5 lever drill