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The STANLEY 85-753 is a 22-piece long arm hex key set covering both SAE and metric sizes, designed for professional tradespeople who need reach and torque in tight fastener locations. Long arm hex keys provide greater access depth than standard-length keys and allow higher torque application on the short arm side. This set is sold as a complete unit and is appropriate for mechanical, HVAC, plumbing, and electrical installation work where hex socket fasteners are commonly encountered. At 1.8 pounds, the full set is compact and portable enough for a service van or toolbox.
This set is suited for residential and light commercial service applications where technicians regularly encounter hex socket cap screws, set screws, and similar fasteners across a range of sizes. Dual SAE and metric coverage in one 22-piece set reduces the need to carry separate inch and millimeter key sets on the job. It is a practical addition to any service technician toolkit for general mechanical assembly and equipment installation tasks.
Designed as a general-purpose long arm hex key set compatible with standard hex socket fasteners in SAE and metric sizes across a wide range of mechanical, HVAC, and plumbing equipment.
Hex key sets are used by HVAC technicians, plumbers, electricians, and general mechanical tradespeople for fastener removal and installation. Always select the correct key size to avoid rounding hex socket fastener heads. Inspect keys for wear or deformation before applying high torque. Store keys in the provided holder or organizer to prevent loss and maintain size identification.
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