Diamond Hole Saw Glass Drill Bit low price high quality diamond hollow drill bit for glass
With 23 production years,the end mills,engraving bit,glass cutter,glass hole and cutting plotter blade made from our company with high precision and durable life time
This section opener only needs to be installed on the ordinary drill or other professional drilling rig. It can be used first, 45 degree oblique drill positioning, then vertical drilling, the force should be slow, the drilling speed is 800-1000 rpm, and the operation must add water.