The Schmidt large capacity refill P 900 with bold ballpoint is suitable for the LGNDR Brass Ballpoint PenTWYST and available with either black or blue ink. Schmidt refills are known for their excellent quality and are entirely produced in Germany – including all components. The large capacity refill P 900 features a metal shaft and a ball made of tungsten carbide. The sealing plug at the end of the shaft corresponds to the ink color. The P 900 refill B – with a wide writing stroke – provides a writing length of up to 7,000 m. The LGNDR Brass Ballpoint PenTWYST comes standard equipped with the large capacity cartridge P 900 M, supplied with black ink and medium writing stroke. Operation and refill replacement: To extend and retract the cartridge, twist the spring-loaded rotary mechanism of the LGNDR Brass Ballpoint PenTWYST. To replace the used cartridge with a refill cartridge, simply unscrew the end of the LGNDR Ballpoint Pen and rescrew after the refill cartridge has been inserted.