Ultra fine retractable rollerball pen for precision writing, featuring new improved gel ink. The barrel has a modern design with a rubberised grip, allowing for comfortable writing.

The ultra-fine 0.38mm and micro 0.5mm pen contains a new formula gel ink that allows smoother writing and extra fine lines while keeping the vivid and crisp colour and uni Super Ink™ properties.

The newly designed tip reduces frictional resistance, providing a smooth writing experience. uni-ball Signo RT1 is available in 8 vibrant colors that feature a semi-transparent barrel that matches the ink color and a rubberized grip to enhance writing comfort.