Proto Tools is an American industrial hand tool company. Founded as Plomb, it is presently a division of Stanley Black & Decker. The company is credited with creating the first combination wrench in 1933.
- Full polish finish provides corrosion resistance and easy to clean surfaces
- 12 point box end allows for fine indexing, helping to improve speed and access. Fits 4, 6 and 12 point fasteners
- Offset box end allows access to recessed fasteners and keeps hands clear of obstructions
