The center push of the tip steady rest processing was also machined while measuring with an image measuring instrument, so the runout is considerably reduced. We are machining to ensure the core is centered, but there is a possibility of variations depending on your work machine, etc., so please adjust the setup accordingly. The tip is finished to be about the same as the side-to-side dimension of a Mini 4WD shaft. Total length is approximately 40mm, shank diameter is ∅2.3mm, length is 25mm, and the hexagonal part is 15mm long. Returns, refunds, and claims after purchase are not accepted. We hope to have a smooth transaction with each other.