Abstract: A multi-purpose tool holder is described, which includes an elongated cylindrical barrel having a non-circular socket in one end for attachment of the barrel to a ratchet-type turning implement. The other end of the barrel forms a slideway for two transversely adjustable jaws that have facing V-shaped grooves designed to grip tool shanks of varying size and shape. An adjusting screw is provided for each jaw, such that the jaws can be held in selected positions of adjustment. The elongated barrel is usable between a turning implement and tool shank gripped by the adjustable jaws. The elongated barrel can also be used as a handle to perform a tool turning operation. For this purpose various sockets are formed in the side surface of the barrel. The shanks of selected tools can be selectively inserted into the various sockets to operatively connect the barrel to the tool.