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The Mustang 4-F1 is a down-the-hole, track-mounted rig that is particularly useful for applications where space is restricted. From all types of construction to geotechnical and geothermal applications, this rig will go anywhere it needs to go. The Mustang 4-F1 is a crawler mounted rig with high ground clearance, which makes it easier to move over uneven ground. It is compact for residential and tight industrial applications to drill 4-6 inch (100-150 mm) holes, 300 ft (90 m) deep. Its top-head rotary design works ideally with Symmetrix drilling systems for casing advance and extraction, and all COP, QL, and TD down-the-hole (DTH) hammers can be used with this rig. This model features wide pads for reduced ground pressure in soft surfaces (12 in. or 300 mm).