4mm Allen key / Allen Wrench

This 4 mm Allen wrench is a durable hex key designed for robotics, 3D printers, and general assembly. Its 4 mm hex profile is perfect for medium-sized fasteners, giving you a strong and reliable grip. The model is set for 100% infill to maximize strength during real use.

Important: For the best durability, it’s recommended to print in PA6-CF, PA6-GF, or another carbon-fiber/fiberglass-reinforced filament.