Titan 12002 4-Piece 2-3/4-Inch Impact Socket Adapter and Magnetic Bit Holder Set includes (1) 1/4-Inch, (1) 3/8-Inch, and (1) 1/2-Inch drive impact grade socket adapters and (1) 1/4-Inch bit holder. Overall length is 2-3/4-Inch and each socket adapter has a 1/4-Inch shank. Constructed of impact grade chrome vanadium steel with black phosphate finish to protect against rust and corrosion. Socket adapters feature a detent ball for secure socket retention. Made in Taiwan.