Eazypower ISOMAX Flex A Bit 73614 Bit Holder, 1/4 in Drive, Hex Drive

Flexes to a full 90 deg. Outer cover does not rotate so it can be used safely at any speed. Rated for 13 ft-lb of torque. Used by electric and cordless drills or screwdrivers. Shank size of 1/4 in.