... 1/2" Sq.Dr. Metric Deep Air Impact Socket, Six point Specifications: Type A: 11mm,12mm,13mm,14mmType B: 15mm,16mm ... and impact resistance.Optimum wall thickness design for strength and access on fasteners having restrictionsAll dimension precision to meet industrial specificationsComfortable ... !! 1/2" Sq.Dr. Metric Deep Air Impact Socket, Six point