The 142C Series spanners from Beta Tools have one open end (15° angle) and a 12 point box end (straight) with a one way ratchet mechanism. Both ends fit the same size metric (mm) fasteners. The handle is extra short to provide clearance in tight spaces. The high polish, chrome plated finish looks great and wipes clean easily after use. The Beta logo and series number are stamped in the center of the handle, and the size is stamped at the open end.