No tools required for upgrades - Outfit Addon 1.4.7 OR Vanilla 1.4.22 - S.T.A.L.K.E.R.: Call of Chernobyl mod for S.T.A.L.K.E.R.: Call of Pripyat - ModDB
Guide: Mechanic Tools, Loyalty [S.T.A.L.K.E.R.: Call of Pripyat] [Tutorials]
Misery 2.2 Tools Locations : r/stalker
Maps and Repair tools image - S.T.A.L.K.E.R. Anomaly mod for S.T.A.L.K.E.R.: Call of Pripyat - ModDB
Tools in Stalker Call of Pripyat: where to find all the kits
Traders Sell All Tools 1.5.1 addon - S.T.A.L.K.E.R. Anomaly mod for S.T.A.L.K.E.R.: Call of Pripyat - ModDB
Walkthrough - Zaton Quests - Part 2 - S.T.A.L.K.E.R.: Call of Pripyat Game Guide & Walkthrough | gamepressure.com
Hint: where are the tools. (S.T.A.L.K.E.R.: Call of Pripyat)
Steam Community :: Guide :: The tool location guide
Support for S.T.A.L.K.E.R. Call of Pripyat at Modding Tools - Nexus Mods
Call of Chernobyl 1.3.20 + AO 3.4.4 - Basic Tools (Possible Location) - YouTube