Do you use the electric hammer drill
Hammer drill to do need a connecting head and a drill chuck, the second part is connected to the head like you and hammer drill bit inserted into the hammer, but after the ass a little shorter because it rushed to the hammer, otherwise the impact will be broken off and connected to the head, the front of the head is connected with wire, can install a 13MM screw drill chuck. You can.
The difference between the two: electric hammer is the use of compressed gas piston, impact drill bit, need not make much effort, in the concrete. Brick. 6--100mm hole stone and other hard materials, drill holes with high efficiency in the materials, but it is not a hole in the drill is metal. Don't need to put pressure on the human impact, metal, wood and other materials on the hole, the diameter of 6 - 50. has the advantages of small vibration, high opening precision, the price is not high. They also use the bit is not the same, the former is inlaid with alloy bit, which is the ordinary cutting bit.
Only when not hammer drill. The impact of the hammer drill / dual-use no momentum. In addition, the hammer head and impact bit are not common. It is best to separate buy a drill and a hammer convenient speed.
