Bishop Da Vinci V2 Cartridges #12 Round Shader Size:9 the Cheyenne Safety Cartridge features

the Cheyenne Safety Cartridge features a shelf-life of up to 5 years and an internal membrane system that prevents ink back flow

All Kingpin Needles are crafted using a lab certified lead free silver bearing solder for maximum safety

The signature needle line from TATSoul in a top quality

and performance

and semi-transparent tip design for improved needle visibility and fluid ink flow

Bishop Da Vinci V2 Cartridges #12 Round Shader Size:9 the Cheyenne Safety Cartridge featuresBishop Da Vinci V2 Cartridges, designed by Carlos Torres and Franco Vescovi, feature a medium tension safety membrane, unique vent hole that provides superior ink flow, and are compatible with all cartridge grip types and pen machine styles.