The metropolis 48-28-4006 Bit Extension can be a reliable product which can be used throughout your workday.
Bit Extension 12″
Extend your reach a full twelve inches once drilling with metropolis Selfeed Bits, Auger Bits and Hole Saws. Accepts all 7/16 in. hex, secures with a hex key enclosed. The 7/16 in. hex fits each three jawed chucks, 1/2 in. drill capability and bigger, in addition as 7/16 in. fast modification chucks.