Feature 1: Sanitation Disposable independent packaging, safe and sanitary. Use without concern for contamination. Hygiene guaranteed. Feature 2: Precise Assembly Assembly production line with standardized operation ensures accuracy for each unit. Effectively avoids errors. Feature 3: Assorted Sizes Includes 5 different models: 1203RL, 1205RL, 1205RM, 1207RM. You will receive 5 pieces of each model, each with precise assembly. Feature 4: Excellent Material Needle made of stainless steel, high hardness, fast ink delivery. Shell made of translucent PC material, clear visibility and durable. Feature 5: Application Range Versatile, suitable for various tattooing techniques. Meets different needs for a satisfying experience. Item Type: Cartridge Needle Material: Stainless Steel, PC Models Included: 1203RL, 1205RL, 1205RM, 1207RM (5 pieces each) Compatible Machine Type: Suitable for cartridge pen and cartridge handle machine Cleaning Method: Ethylene Oxide Reusable: No (Disposable) Shelf Life: 5 years Package List: 20 x Cartridge Needles