Arrowmax AM-492023 Replacement Arm Reamer Tip 4.0mm (Tungsten Steel) - Tip Only  [AM-492023]

Tungsten 4.0mm cutting tip for model arms

The Arrowmax AM-492023 is the replacement cutting tip intended to finish 4.0mm holes in plastic or composite suspension arms. The tungsten steel element is provided as the blade only, designed to recover round geometry and eliminate burrs that interfere with ball stud and turnbuckle seating.

Use the tip with a compatible handle or tool holder made for RC setup tasks, running at modest speeds and light feed to protect the carbide edge from overheating. Because the tip is narrow, it concentrates on the arm pivot area where accurate hole shape supports consistent suspension behavior and reliable measurement during tuning.

Maintenance is straightforward: remove debris after each use, avoid side-loading that risks chipping, and inspect the cutting face regularly. This item is for model-scale components only and not suitable for full-size applications.