Particularly useful is the quick-adjust mechanism that incorporates a sliding speed nut. The nut engages only when it comes up against the centering collar next to the leg post. The strong spring holds any setting accurately. Black oxide finish.
Sizes indicated are maximum opening. The 4" is ideal for finer turning; the 8" size for general-purpose use; and the 12" for large work. Available individually or as a set of three containing one of each tool (all the same size).