The wera 8001a bit ratchet bit check set is an ideal choice when lack of space prevents the use of power tools or conventional tools the ergonomic ratchet headhandle with kraftform geometry has perfectly shaped contact zones for your fingers and thanks to its easy one hand operation is easy to use in confined spaces the compact tool design allows for low working heights thanks to integrated bit holder in ratchet head it is supplied with the wera adaptor 8701 for for use with 14 inch drive socket