Magnetic Impact Socket, Better keeps the fastener in the socket.

Tien-i Impact Socket Made in Taiwan, from forged and heat treated CHROME MOLYBDENUM STEEL (CR-MO) with a corrosion-resistant black phosphate finish (MANGANIC PHOSPHATE FINISH)
Tien-i Impact Socket with High-torque, 6-point socket design grips the flat sides of fasteners, not just the corners, preventing round-off
Complete Sizes for SAE and Metric system
High-contrast permanent laser etched size markings are easy-to-read, even in low light
Tien-i Impact Socket meets or exceeds ANSI & DIN & ISO performance standards
To know more: Differences between DIN and ANSI Specifications for Impact Sockets