Mitsubishi Pencil Gel Pen Uni-ball ONE P Refill for 0.38mm Red

Genuine Mitsubishi refill cartridge for the Uni-ball ONE P gel pen. Fits 0.38mm tip size in vibrant red ink. Smooth, consistent writing performance with quick-drying formula. Perfect for replacing worn refills and extending the life of your favorite pen. Compatible with standard ONE P barrel designs.