Berkshire Hathaway Inc. is a provider of property and casualty insurance and reinsurance services and is also active in other business fields: utilities and energy, freight rail transportation, finance, manufacturing and retail. In 2006, CTB Inc, a unit of Berkshire Hathaway, acquired Agrologic, a developer of systems in the field of animal husbandry control and automation. In 2013, TTI Inc, a wholly-owned subsidiary of Berkshire Hathaway, announced the acquisition of Ray-Q Interconnect, an Israeli company which develops electrical systems for military industries. Another important Israeli acquisition was Iscar, a maker of metal cutting tools. Berkshire Hathaway purchased an 80% stake in Iscar in 2006 and the last 20% in 2013.