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The PROTO J5441-12MXL is a long hex bit socket designed for heavy-duty hand tool applications. Built for a 1/2 inch drive, this socket accepts 12 mm hex fasteners and delivers a total overall length of 7.25 inches, with a bit length of 5.625 inches. The extended length makes it well suited for reaching recessed fasteners or hex-head bolts in confined spaces where a standard-length socket would fall short. Licensed tradespeople and experienced mechanics reaching deeply set hardware will find the extra reach practical without sacrificing drive stability.
This socket is used wherever a 12 mm hex bit is required with added depth access. Typical applications include mechanical assembly, equipment maintenance, and service work in industrial or commercial settings. The 1/2 inch drive sizing makes it compatible with standard 1/2 inch drive ratchets, breaker bars, and torque wrenches commonly found in professional tool kits. It is sold individually and is appropriate for both bench and field use.
Designed as a long hex bit socket for use with standard 1/2 inch drive ratchets, extensions, and torque wrenches requiring a 12 mm hex bit.
Install and remove with a standard 1/2 inch drive ratchet or breaker bar. Ensure the drive connection is fully seated before applying torque to avoid rounding the fastener or damaging the socket. When using with a torque wrench, verify the wrench is rated for the required fastener torque before use. Inspect the socket for wear or cracks before each use.
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