Wedge-type, 8 tiers of gear and cam teeth interfere with a new mechanism. We utilize technology and know-how to make it thinner, lightweight, and compact. Designed for high dimensional maneuverability and functionality. The "smooth curved design" combines a comfortable grip and texture. Considering the TONE logo, the smooth curved design makes it easy to grip. The grip is a I-section grip with shaved excess meat to reduce weight while ensuring the strength needed when applying force in the rotational direction. Beautiful polished pearly finish The head has a 72 tooth gears that provide a 5° feed angle. The new mechanism (wedge. Even though the number of teeth is increased, the gear and cam are interfered with 8 tiers (wedge. It has both reliable work and efficient operation. The new little bit and light clicks will immerse you into the work. Compatok is designed with a smaller head than standard.