Get metric AND standard. Sheers. Metal cutters, side snips, and some heavy duty scissors. Variety of screwdrivers and nut-drivers. The most common type of nut driver you will be using as a service or maintenance hvac technician will be 1/4″, 5/16″ and 3/8″. Get big and small insulated flathead and Phillips screwdrivers as well.
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