Based on this product's specifications, here are some alternatives and similar models
Technical Drawing Pen Rystor CK-05 blue - fine-line draughting instrument
Summary description:
Rystor CK-05 is a blue technical drawing pen designed for precise fine-line drafting and illustration. Intended for use in technical drawings, architectural sketches, diagrams and detailed artwork, it provides consistent ink flow and a defined stroke suitable for rulers and templates. Practical for students, designers and engineers requiring accurate line work.