A Suzuki quad bike was stolen from a unit at Enterprise Court in Geddington Road, Corby.
The yellow bike, along with a disc cutter and a Makita drill, were taken from the unit at some point between 2pm on Saturday, February 13, and 5am on Monday, February 15.
The bike is the same as the one pictured but has a black seat.
Police want to speak to anyone who witnessed the incident or who has any information about it.
Witnesses or anyone with information is asked to contact police on 101 or Crimestoppers anonymously on 0800 555111.