The FastRatch 240 from STAHLWILLE features a patented technology of the "opening ring," meaning it can operate even in installation positions that are difficult to access. The wrench is 8mm and has a slim, ergonomic design, and can be used for metric and imperial screw connections. The ratchet spanner is made from stainless, tempered steel. An integrated closing spring allows the wrench to reliably grup rounded screws and nuts, even when tension is relieved.