It is compatible with all sizes of wireline and is suitable for Top drive, Side Drive or Kelly Drive Systems. LE MACK allows right or left handed radial and axial movement of the drill string with the wireline or coiled tubing installed, eliminating wear and damage to the wire, Top Drive and drilling equipment. It avoids hazadous and time consuming removal of the washpipe, bullplug and mud screens.

The split grease tube sealing system can be readily checked for wear and enables rig up, rig down, tool and cable head changeover times to be kept to a minimum. Additionally, wireline and tool recovery to the surface can be achieved under pressure conditions.

Extra entry ports are provided in the upper end plate for a second wireline entry, coiled tubing or for the introduction of drilling fluids, cement or special fluids.