• $60.00

Rule/One Pen By Hmmproject

This pen-ruler combination perfectly fits your notebook as a bookmark with its unique droplet shape while fulfilling different uses – on paper, on tablet, and on the go – with the interchangeable heads. Sleek, compact, this finely crafted tool is light and delightful to unleash your ideas with joy.


  • Finely crafted milled aluminum body
  • 60g, L: 5.43″ / 138mm, W: 0.98″ / 25mm, H: 0.43″ / 11mm
  • Interchangeable heads for different uses (ballpoint, stylus, lanyard)
  • Refill: Uni-ball Signo UMR-85 (for UMN-207 Micro, 152, 105)
  • Made in Taiwan