Paramount PAR37199 9 Piece Metric Hex Key Set

Product Description

The PARAMOUNT PAR37199 is a 9-piece metric L-key hex key set designed for fastener driving in mechanical, HVAC, plumbing, and electrical service applications. The set covers nine hex sizes ranging from 1.5 mm to 10 mm, giving technicians the range needed to address the most common metric fasteners encountered in the field. Each key is constructed from steel for durability under torque. The L-key handle design provides both a short-arm option for tight spaces and a long-arm option for extended reach and greater leverage. Keys store in an included plastic holder for organized transport in a tool bag or service van.

This set suits trade professionals who regularly work with metric fasteners on equipment enclosures, motor mounts, control panel hardware, pump housings, and similar assemblies. The metric sizing makes it appropriate for imported equipment and components common in modern HVAC, refrigeration, and mechanical systems. The compact plastic holder keeps the set intact on the job site and reduces the risk of lost keys between service calls.

Key Features

• 9 individual L-keys covering metric sizes 1.5 mm, 2 mm, 2.5 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, and 10 mm
• Steel construction for strength and resistance to rounding under load
• L-key handle format provides short-arm and long-arm drive positions
• Plastic holder keeps all 9 keys organized and prevents loss
• Overall length of 7.25 inches on the long arm suits standard service clearances

Compatibility

Designed as a general-purpose metric hex key set suitable for metric fasteners commonly found on HVAC equipment, mechanical systems, pump assemblies, and electrical enclosures.

Installation Notes

Hex key sets are a standard hand tool used by HVAC technicians, plumbers, electricians, and general mechanical trades. Always confirm the correct key size is fully seated in the fastener socket before applying torque to avoid rounding the drive recess. Inspect keys periodically for wear or deformation and replace any key that shows signs of rounding or cracking.