1/4" PIVOTING MAGNETIC DRILL BIT HOLDER WITH 6MM HEX SHANK FLEXIBLE EXTENSION SCREWDRIVER BIT HOLDER Extender Rotatable in 20° Angle Drill Bit Holder. Pull the metal ring to switch to linear mode for sleeve extension. There are magnetic parts inside the pivoting bit tip holder, you can easily fix and remove the bits. The bracket is suitable for any cordless impact tool. The quick change /release bit holder perfectly matches any 1/4" hex shank screwdriver bit.