Arrowmax AM-410140-BG 4.0 x 120mm Allen Wrench Hex Driver  [AM-410140-BG]

4.0mm Hex Driver for RC Work

The Arrowmax AM-410140-BG Allen Wrench is a 4.0 x 120mm hex driver sized to fit 4.0mm hex screws commonly used on model chassis and components. Its 120mm shaft helps reach recessed fasteners and confined spaces while the black golden finish is a surface styling note rather than a material specification.

This tool is intended for general assembly, setup and quick adjustments of RC models, supporting tasks like chassis alignment, suspension trim and servo installation. The consistent tip profile and shaft length make repetitive tightening or loosening less fatiguing during extended sessions.

Because the maker does not list further material or treatment details beyond the finish, inspect the tip before precision work and replace the tool if the tip shows wear to avoid rounding fasteners.

Use the 4.0 x 120mm Allen wrench as a general-purpose hex driver for model assembly and setup; keep it clean and stored dry to extend tip life.