Type: Arm Reamer Tip size: 3.0mm Tip length: 120mm 3mm Arm Reamer for 1/10 scale RC car arms A binding suspension will negatively influence the handling of any R/C car. The new Arm Reamer is the latest addition to the professional HUDY tool line. Designed specifically for R/C use, this reamer will precisely resize plastic holes without creating excessive slop, allowing you to build a perfectly free-moving suspension. The tool is specially designed and hand ground to create sharp micro scurfies on the surface of the tool pin to precisely size plastic without tearing, stressing or over-sizing the hole of the suspension arm.