This Kyosho reamer is designed to ream out the lower suspension arm pivot holes on Mini-Z MR-04 chassis to a precise 4.5mm diameter, ensuring proper fit for suspension components. The knurled metal handle provides a secure grip during use, and the ball-end tip allows the tool to be worked at an angle when needed. It is a dedicated setup and maintenance tool for hobbyists building or tuning Mini-Z platform vehicles. Features: 4.5mm reaming diameter for lower suspension arm pivot holes Ball-end tip allows angled use Knurled metal handle for secure grip Dedicated fit for Mini-Z MR-04 chassis work 7/7/26 cs