. Also it features a radius corner design causing the socket to grab the sturdy wall of the fastener instead of grabbing the corners resulting in less wear on the fastener.Sunex SUN223MD 1/2 Inch Drive Deep 6 Point Impact Socket - 23mm This 1/2" drive 23mm deep 6 point socket is designed to tackle the toughest jobs with solid durability and keeps them pounding job after job.