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The MILWAUKEE TOOL 45-34-2120 is a deep hand socket built for metric fastener applications in professional trade and maintenance environments. It features a 1/2 inch square drive and a 6-point contact geometry that grips fasteners squarely to reduce rounding under load. The chrome finish provides corrosion resistance for long service life in shop, field, and service truck use. The standard-length deep design allows access to recessed fasteners and extended studs where a standard-depth socket cannot seat fully. This socket is intended for use by mechanics, plumbers, HVAC technicians, and electricians who work with metric hardware daily.
This socket is suited for residential and commercial service work involving metric fastener sizes. The deep profile makes it particularly useful on threaded rod, long bolts, and recessed nuts common in equipment installation and mechanical service. It is a non-tethered design and is appropriate for general hand-tool use in non-elevated or non-tether-required work areas. Compatible with any standard 1/2 inch square drive ratchet, breaker bar, or torque wrench.
Designed as a standard 1/2 inch square drive deep hand socket compatible with any 1/2 inch drive ratchet, torque wrench, or breaker bar used with metric fasteners.
Installation and use of this socket does not require power disconnection in most applications, but standard lockout/tagout procedures apply when servicing energized equipment. Ensure the socket is fully seated on the fastener before applying torque to prevent slippage or fastener damage. Inspect the socket for cracks or wear before each use, and do not use with impact drivers unless the tool is rated for impact use.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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