Discover the precision of Dr. Pen cartridges, designed for optimal performance and compatibility with specific Dr. Pen models. Our cartridges are engineered with surgical-grade stainless steel and crafted to meet the highest standards of safety and efficacy. When you buy from us, you're guaranteed genuine Dr. Pen products from Authorized Retailer, providing peace of mind with every purchase. Trust in our official lifetime warranty and experience the difference with authentic Dr. Pen precision. Features: Material Excellence: Each needle is meticulously made from surgical-grade stainless steel, ensuring sharpness and durability for safe, effective use. Precision Targeting: The fine 0.18mm gauge needles deliver precise application, ideal for detailed areas of the skin, enhancing collagen and elastin production through efficient microchanneling. Sterility Guaranteed: Packaged in a medical-grade, sterile environment, our cartridges are single-use to prevent cross-contamination and ensure optimal performance with every session. Model Compatibility: Ensure to use the cartridge with its compatible Dr. Pen model as stated, to guarantee functionality and safety.