Rubberband Cartridge Needles Key benefits Classic cartridge design with an internal rubber band for improved needle stabilization during use. Smooth, stability operation that adapts to different cartridgestyle tattoo machines, helping maintain consistent needle movement. Clear orientation requirement for penstyle machines: keep the cartridge positioned below the machine horizontal plane to ensure proper function. Professional use only. Use only if the package is undamaged. Features and performance Function: cartridgestyle tattoo needle designed for reliable insertion and consistent performance during tattooing sessions. Compatibility: fits a range of cartridgestyle tattoo machines, including penstyle machines when positioned correctly. Material and construction: classic cartridge build with integrated rubber band mechanism to reduce unwanted needle play and improve stability. Performance: engineered to run smoothly across different machine styles, supporting consistent stroke and control. Practical use scenarios Session switching between machine types: use these cartridges when moving from one cartridgestyle machine to another to maintain stable needle behavior. Detail work and steady lines: internal rubber band stabilizes the needle for tasks that require control and consistency. Multihour projects and complex pieces: consistent performance helps reduce adjustment time when working through longer sessions. Important use notes When using with penstyle machines, keep the cartridge positioned below the machine horizontal plane to ensure proper operation. For professional tattoo artists only. Do not use if the package shows signs of damage or tampering. Packaging and handling Sold as cartridge needles in their sealed packaging. Inspect the package before use and discard if damaged.