The utility model relates to a drill bit for drilling through holes on various kinds of wood. It is composed of a head (pointed part), a drill body (a spiral part of a cutting edge) and a drill handle (a clamping part). The shape of the tip part is a right-hand conical self drilling thread structure, which has the advantages of reasonable structure design, smooth and light drilling, high efficiency, smooth and smooth hole wall and smooth chip removal after drilling.

Special reminder: it is only used on wood. In the process of using, the drill bit will drill into the wood by itself, which is very labor-saving. However, it should be noted that the torsion during the use may be very large. Attention must be paid to the use of electric drill.

BOSENDA Hexagonal drill bits with four edge four groove,made by high carbon steel material, specifications from 10 * 165 to 35 * 165, suitable for solid wood board, particleboard, sandwich board and MDF board, as well as all kinds of cork, hardwood, plastic, rubber, polyurethane, etc.
(DO not drill on metal materials )

Handle specification: hexagonal 6.35mm (1 / 4)
Total length: 165mm
The four groove drill is suitable for wood deep hole operation, and its speed is increased by 30% compared with the common woodworking hole opener, and the sawdust removal capacity is increased by 20%. It is nearly twice the drilling depth, which is a sharp tool to deal with thick plates.
(opening the foam box hole is also suitable).

Special attention:
The drilling speed should not be too fast. Please refer to the following information:
Diameter (mm) speed (RPM)
10 – 20 1500-2000
22 – 25 1000-1500
28 – 35 ＜1300

The products has specification of precise positioning, self tapping guide bit, sharp tooth shape, smooth chip removal.With the central positioning and acceleration of thread,which make it more accurate and simple opening. The four edge cutting,which greatly improved the efficiency of opening. Four slot chip removal design, hexagonal handle, the 6.25mm handle is easy to fix and its more firmly.