Overnight on Monday 17 to Tuesday 18 June 2013, burglars broke into a factory unit near the village of Flaxby near Knaresborough and took the Snap-on branded goods.
Police are asking members of the public to keep an eye out for anyone selling cheap Snap-on goods after burglars stole £115,000 worth of power packs, battery packs and jump leads.
Police believe the items are destined for outlets such as car boot sales, Sunday markets and may even be touted around building sites.
The stolen goods include 150 red power packs, 79 red portable battery packs and 1,000 pairs of jump leads.
Acting Inspector Andy Quaye of Harrogate police, said:
Anyone who is offered cut-price Snap-on tools, other than from a recognised retailer should be on their guard and call the police.
We would also like to hear from anyone who saw or heard any suspicious people or vehicles in the Flaxby area on Monday night or Tuesday morning.