The DongCheng HD092601 9-Piece Long Arm Hex Key Set provides extended reach and greater torque leverage for demanding mechanical servicing, industrial machinery maintenance, and automotive repairs. The elongated shafts allow technicians to reach deeply set socket cap screws while offering extra leverage on stubborn, overtightened fasteners.

Drop-forged from high-grade Chrome Vanadium (CR-V) alloy steel and thoroughly heat-treated, these keys resist bending, rounding, and torsional deflection. The bright chrome-plated finish delivers protection against rust and abrasive wear. Covering 9 metric sizes from 1.5mm up to 10.0mm, the set is held securely in a compact, labeled caddy and packaged in a protective slide blister.

Key Features

• Extended Long Arm Reach: Provides superior access into deep mechanical recesses and increased mechanical leverage.
• Industrial CR-V Construction: Heat-treated Chrome Vanadium alloy provides high torsional yield strength.
• Corrosion-Resistant Chrome Finish: Polished chrome plating shields against shop liquids, chemicals, and rust.
• 9-Piece Metric Range: Complete size set includes 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm, and 10mm.
• Chamfered Hex Ends: Precision-ground edges allow quick, clean insertion into fastener heads.
• Organized Storage Clip: Size-marked folding holder keeps keys neatly organized and secured.

Applications

• Servicing recessed hex socket head cap screws in machinery housings and industrial gearboxes
• Automotive engine bay maintenance, manifold fittings, and brake rotor fasteners
• Motorcycle and bicycle repairs requiring extended leverage
• Plant assembly lines, conveyor system maintenance, and tooling setups

Technical Specifications

Size/Model-wise Table