The PARVEEN Heavy Duty Releasable Pulling Tool is a collet type pulling tool used to latch and retrieve wireline tools with badly damaged external fishing necks. The Heavy Duty Releasable Pulling Tool is extremely robust in construction and allows a full 360-degree engagement with the fishing neck to be latched. The fishing socket can be released by jarring downwards provided a solid footing is available for the core to be driven against.