Milwaukee Tool 49-66-7021 Metric Deep Socket Set

Product Description

The MILWAUKEE TOOL 49-66-7021 is a metric deep socket set covering sizes from 10 mm to 21 mm. Deep socket geometry provides the additional clearance needed to reach fasteners on extended studs, recessed bolts, and protruding hardware that standard-depth sockets cannot access. The set is sized for use with standard drive ratchets and breaker bars. Electricians, HVAC technicians, plumbers, and general mechanical contractors reach for deep socket sets on service calls where fastener depth or obstruction rules out a shallow socket.

This socket set is suited for residential and commercial service work across multiple trades. Common applications include panel and equipment mounting hardware, conduit fitting fasteners, motor mounting bolts, and similar metric fasteners found on imported equipment and machinery. The 10 mm to 21 mm range covers the most frequently encountered metric bolt heads in mechanical and electrical service environments.

Key Features

• Metric sizing, 10 mm through 21 mm coverage in a single set
• Deep socket profile for access to extended or recessed fasteners
• Compatible with standard drive ratchets and breaker bars
• Set weight of 10.43 pounds indicating robust, full-coverage construction

Compatibility

Designed for use with standard drive ratchet handles, breaker bars, and extensions common to professional trade tool sets.

Installation Notes

Ensure the drive tool and socket are fully engaged before applying torque to avoid rounding fastener heads. Inspect sockets for cracks or wear before use on high-torque fasteners. Follow applicable workplace safety guidelines when working on energized or pressurized equipment - de-energize or depressurize the system before using hand tools on fasteners in live service environments.