The driver casually used the penetrating driver of Bessel for many years. For Bessel products, there was nothing dissatisfied in particular, but in many cases it suffered with other people, and finally lost in the field this time, in the beginning, lost to a price that is about 100 yen more expensive than Bessel It replaced the KTC product. Surprisingly, the KTC comfortably comes to the feel that it held. It was particularly noticeable when handling with one hand, and was more manageable than the vessel. The accident that accidentally falls out of the driver's holder of the removed waist tool is extremely small compared to the vessel which was falling apologically. If it is company-owned equipment Bessel. If it is private ownership, is it the place called KTC?