Thinkpad x1 tablet gen 3 pen holder cap

Pen tip protector for the pen holder (part number 4X80Q79641) https://support.lenovo.com/us/en/accessories/acc500038-thinkpad-x1-tablet-gen-3-pen-holder-overview-and-service-parts

Print with the pointy end down (with supports) to have a smooth inner surface of the cap.