Endeavour Hills Police are investigating a series of fraudulent tool purchases across the South-East.
They believe a man swindled hardware stores in the Doveton, Narre Warren and Keysborough areas between 31 December last year and 25 January.
Police released a CCTV still of a man they believe could assist with their inquiries.
Anyone with information should call Crime Stoppers on 1800 333 000 or visit www.crimestoppers.com.au and quote incident number 180045474.