Two 100 t capacity Grove all-terrain cranes are installing large components for a contractor specialised in installing pre-fabricated concrete structures. The GMK5110-1 and GMK4100L are working around the city of Cologne in Germany and are used at a range of commercial and residential projects to deliver smooth and precise lifts, often under tight deadline. BFM, based in Bruggen, is operating the cranes and is a specialist in pre-fabricated buildings. Klaus Pahnke, the company's owner, said he invested in the two Groves because of their excellent agility and precise load movement. BFM added the GMK5110-1 to its fleet in March 2012 while the GMK4100L arrived in December that year. Grove's GMK 5110-1 has a 110 t capacity with a 51 m main boom, which can be extended an additional 34 m with a jib. The GMK 4100L is a four-axle 100 t capacity crane with a 60 m boom, which can be extended to 77 m with a jib.