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

both Standard & Shorty

The Hawk Grip features easy turn-and-click adjustable needle depth and a ribbed body for an improved grip

lighter design

Sterilized disposable grips

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.