This package contains four black metal wheel hub couplers with matching long screws, giving you the main parts needed for RC crawler wheel hub installation. For model parts, they are designed for builders who want a practical connector set that fits into a compact drivetrain setup without unnecessary additional components. Each hex coupler is a 5 mm coupler with a 5 mm to 5 mm connection size, so it is intended to link compatible shafts and hubs with a straightforward fit. The CNC machined cylindrical stepped shape, hexagonal upper section, and threaded hole at the top section display a construction that supports clean alignment during assembly. The black finish gives the wheel hub hex coupler a uniform look, while the included four long screws provide the mounting hardware needed to secure each piece. For RC crawler projects, this set is a useful choice when you need dependable wheel hub connection parts for rebuilding, replacement, or regular maintenance.
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