From Mr. HVAC
This is the absolute best set of drivers for the HVAC technician. I own two sets of these. One set is in my home tool bag and the other is in my work tool bag.
This set includes your common sizes which are 1/4”, 5/16”, and 3/8”. These drivers are extra long and magnetic, which is very handy. I have included a related product which is a short multi-size driver which is needed for tight spaces. You will want both of these. I carry both.
Adapted from Amazon
- Magnetic nut driver provides convenient pick-up and retention of hex fasteners.
- lobular design drives along flats to reduce rounding of hex fasteners.
- Flat edges at hex opening for full contact with flanged hex head screws.
- Performance-optimized S2 steel construction for extended life.
- Calibrated heat treating process for added durability.
- The socket sizes are 1/4”, 5/16”, and 3/8”. These are the most common.