The Kuretake Bimoji Fude Pen XT1-10S(hard tips) is a highly regarded tool among artists and calligraphers, especially for those seeking precision in their work. Here's an overview of its features and user feedback:

Features:

Extra Fine Felt Tip: The pen boasts an extra fine, flexible fiber tip that offers excellent control, making it ideal for detailed work in manga, calligraphy, and illustrations. Each pen has a hanging loop.

Waterproof Ink: It uses smooth-flowing, water-based black pigment ink that becomes waterproof when dry, allowing for layering and mixed media applications without smudging.

Ergonomic Design: The pen features a comfortable, easy-to-hold rubber grip, facilitating prolonged use without discomfort.

Ink Quality: The waterproof nature of the ink ensures smudge-free artwork once dried.

Quote product reference: B63994