Macedon Ranges Crime Investigation Unit detectives are investigating the theft of tools from a business in Mount Macedon earlier this year.
Police have been told offenders arrived at the Cameron Drive address just after 4am on Wednesday 10 February and gained entry by forcing a door lock.
The men accessed an external storeroom, stealing a water pump, pressure washer as well as other power tools and items.
Investigators have released images of males they believe can assist with their enquiries.
Anyone with information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppersvic.com.au