Yuandesignstudio TP2 Reform

Another excellent ruler pen. The ruler part acts as a cap for the pen for the ultimate deep capping and posting.

Variants: Available in a few colors. This company offers two very similar pens the TP2 & TP1.

Refill: Zebra Sarasa gel refill. The pen body has very tight tolerances on the refill. Pentel Energel seems like it should fit but the refill tube is too wide for the body.