- Includes 8-pc. 3/8 in. drive triple square bit sockets: M4, M5, M6, M7, M8, M9, M10, M12; Socket rail
- S2 steel bits are press-fit into the socket for a straight, permanent connection that can't loosen over time
- Triple square (XZN) S2 steel bit tips are machined to precise tolerances for strong engagement with fastener heads
- Large, clear die-stamped size markings are easy to read and can’t wear off
- Four detent grooves provide a secure connection with the drive tool
- Polished, chrome-plated finish easily wipes clean and is highly resistant to corrosion
- Twist-to-lock socket rail organizes and securely holds sockets in place, both for in your toolbox and on the go
