WORKPRO 4PC Magnetic Drill Bit Extension Set 1/4" Hex Screwdriver Bit Holder Set

DUAL LOCK: The magnetic bit holder features a strong built-in magnet and a ball-bearing lock for dual locking, ensuring your screwdriver bits and drill are securely held in place. VERSATILE LENGTHS: Enjoy exceptional flexibility with the 4-Piece drill bit extension set, which includes sizes of 2-3/8", 4", 6", and 12".