| Specification | Parameter |
| Brand / Manufacturer | Dongcheng |
| Series / Model | DG Series Long Hex Key Set |
| Product Type | 9-Piece Long Arm Metric Hex Key / Allen Wrench Set |
| Piece Count | 9 Pieces per Set |
| Material Base | Chrome Vanadium (CR-V) Steel |
| Surface Finish | Full Mirror Chrome Plating (Anti-Rust Coating) |
| Heat Treatment | Fully Hardened and Tempered Industrial Thermal Treatment |
| Arm Type / Configuration | Long Arm L-Shaped Pattern (High Leverage & Deep Reach) |
| Included Metric Sizes | 1.5mm, 2.0mm, 2.5mm, 3.0mm, 4.0mm, 5.0mm, 6.0mm, 8.0mm, 10.0mm |
| Fastener Compatibility | Internal Hexagonal Socket Head Screws, Bolts & Set Screws |
| Application | Deep-Set Engine Fasteners, Industrial Machinery, Bicycle Tuning & Heavy Equipment |
| Best Used For | Maximum Torque Leverage, Recessed Fastener Reach & Professional Mechanical Maintenance across Nepal |
Extended Long Arm Design: Elongated shaft length provides exceptional mechanical leverage for loosening frozen bolts and extends deep into narrow, recessed engine and machinery cavities.
Premium Chrome Vanadium (CR-V) Alloy: Forged from high-grade CR-V steel for extreme torsional resistance, preventing rounding, shearing, or bending during high-torque applications.
Full Thermal Heat Treatment: Undergoes precision quenching and tempering to produce high core toughness and durable, wear-resistant hexagonal driving edges.
Mirror Chrome Plated Finish: Protective polished chrome barrier repels shop grease, automotive oils, and ambient moisture, providing long-term rust and corrosion defense.
Comprehensive 9-Piece Metric Range (1.5mm – 10mm): Complete set includes 1.5, 2, 2.5, 3, 4, 5, 6, 8, and 10mm keys organized for rapid selection during automotive and industrial maintenance across Nepal.