"Wera's 003596 Zyklop Ratchet Sets are unlike any other ratchets currently available on the market today. They feature a rotating mass design which accelerates the fastening process. This design, in combination with a free-wheel sleeve, lets the user turn the fastener faster than any conventional ratchet. Rotating mass design and handy freewheel sleeve for faster work and swivelling ratchet head. Zyklop's unique socket lock system makes accessory changes much faster. The ball lock secures both sockets and any accessories for a reliable fit and safe work. Simply press the release button and tool changes are possible in each of the 5 ratchet head positions. Each premium extension also comes fitted with a flexible locking system. When activated, the drive handles can be secured permanently to the extension, while still allowing fast changes when deactivated. This is the only ratchet set on the market that can double for use as a screwdriver. Zyklop ratchets are capable of holding a bit in the in-line, or 0-degree position for use as a screwdriver. Wera's unique handle provides the ultimate comfort and grip making any task easier on the hands, while the thumbwheel allows for seamless switching between forward and reverse gears. The Zyklop has defined lock positions at 0, 15, and 90 degrees right and left, and at 0 degrees. it can be used like a conventional screwdriver. It features pushbutton release, CW/ACW toggle, fine-pitched tooth design, and has a small return angle of 5 degrees."