The same drills that weigh over 5 pounds and have more power while 1000 watts, are capable of rotating drills with a diameter of 30 or even 50 mm. Such models can be used as a – they have great structural strength, but a powerful drive and severity of construction tools provide sufficient intensity of exposure. – Type of mounting attachments. On today in the domestic market, there are two basic types of mounting nozzles – chisels and drills, bits and lances, etc. This sds + and sds Max, the first of which is usually used for relatively light low-power and punch into force This is the most common. But the second type is designed just for the professional techniques for building a tool that is constantly working under heavy loads. If the production construction work will need to use heavy drills, it is better to opt for sds Max. – Type of protection of internal elements of punch and working with him a man emerging from the construction dust.
You should ensure that inside your tool can not directly get particles emitted from the working area. Failure to do so can lead to serious consequences, including the jamming of the nozzle and the overheating of the device. – Manufacturer equipment. Now there are many manufacturers of power tools, and almost every one of them produces punchers. Qualitative models are always provided with documentation on the use of responsible manufacturers also often supply their products accessories for the care of an instrument, additional attachments, etc. Need to draw the line between amateur and professional devices. Model line first never designed for constant hard work, and therefore should be wary of inexpensive punches. It is recommended to use drills only on approved manufacturer, equipped with full manufacturer's warranty – this will ensure the safety of use and lack of confidence in the financial implications for the premature failure of the device. Proven punchers of any class can be purchased at any large diy stores, and professional construction equipment – and in specialized shops.