The Breakout Clamps can be supplied as single or double units. The double unit has a second set of clamps mounted on the top of the first and can be swiveled in either direction to break loose threaded tool joints. The advantage of this type of system is that it can grip many different sizes without the need of slips. The clamps have a range from 56mm (2.2”) to 188mm (7.4”). Larger size clamps are available upon request. It is recommended that a minimum wall thickness for casing of 10mm (⅜”) be used .
Please check that on the shorter drill masts with 1.4m  (4’ 7”) of stroke that the double clamps will allow full use of the drill string. If the double claps restrict too much of the usable height use a longer stroke mast or a single clamp unit.
The single clamps have the option of a breakout cylinder to power a pipe wrench to break loose threaded tool joints.