1、SPECIFICATION AND USE: Square tap socket, with standard M10 specification and 1/2 inch drive, connected to standard machine tap, suitable for electric, pneumatic or hand wrench. 2、EXCELLENT STEEL: This square tap socket is made of excellent Cr molybdenum steel material. With black finish, high strength, impact resistance, good durability, and long service life. 3、SECURE LOCKING: The spring loaded brake ball system can lock the socket in place, ensuring that the socket is loose or falls off during operation, and greatly improving work efficiency. 4、INCREASED TORSION: Designed with rounded corner, reduces wear and increases the torsion of fastener by applying force on the fastener wall instead of the corner, designed for impact driver. 5、CLEAR MARKING: With fine processing, this square tap socket features etched size markings, has high contrast, ensuring easy reading even under low light conditions and reducing errors.