Abstract: A fishing tool comprising a body member having an offset entrance port into a cylindrical cavity that contains a slide member having a trough-shaped lower portion positionable adjacent the entrance port in either of two diametrically opposed angular positions to alternatively capture or release an enlargement on a rod inserted into the body member cavity via the entrance port. Grooves are cut into the slide member and a pin is mounted on the body member to rotate the slide member one half turn when the slide member is reciprocated in the cavity. The rod can be a portion of a collet in a barrel attached to the body member, the bore of the barrel and the collet having mating frustoconical surfaces for collapsing the collet fingers about a uniform diameter rod when the rod portion of the collet is released from the body member and slide member.