5/16" Magnetic Nut Driver Attachment for 1/4" Hex Drivers
5/16" is the common hex bolt size found on AC unit panels. This bit is used with the HVAC Megapro driver.
Attachment comes with holder for Megapro screwdrivers or any Screwdrivers with a shaft diameter of approx. 0.375″ (9.6mm) min
Ball bearing holds bits in place so a magnetic shaft is not needed.
Bit and Shaft Adapter Only. Full Screwdriver Sold Separately