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The PARAMOUNT PAR35522 is a 16-piece fold-up hex key set designed for professional use across HVAC, plumbing, electrical, and general mechanical service work. The set covers a hex size range of 5/64 to 1/4 inch on the SAE side and 2 mm to 8 mm on the metric side, giving technicians the most common drive sizes in a single compact tool. Keys are machined from steel for durability under the torque demands of typical fastener work. The folded handle design keeps all 16 keys organized, protected, and ready for use without requiring a separate pouch or storage case. At 0.84 pounds, it is light enough to carry in a service bag without adding meaningful weight.
This hex key set is suited for residential and light commercial service calls where a technician needs to remove or install socket-head cap screws and hex fasteners on equipment panels, motor mounts, valve assemblies, and control components. The dual SAE and metric coverage makes it practical for work on both domestic and imported equipment. It is a standard carry item for HVAC technicians, plumbers, electricians, and pool service professionals who regularly encounter hex-drive fasteners in the field.
Designed as a general-purpose hex key set compatible with standard socket-head cap screws and hex fasteners in SAE sizes 5/64 to 1/4 inch and metric sizes 2 mm to 8 mm across HVAC, plumbing, electrical, and pool equipment applications.
This tool is used by service technicians across trades and does not require a dedicated installation procedure. Always de-energize equipment and shut off fluid or gas supply before using hand tools to remove fasteners on live systems. Inspect each key for wear, rounding, or cracking before applying torque, as a damaged key can strip a fastener head. Follow equipment manufacturer service procedures and applicable codes when disassembling or reassembling components.
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