2nd Generation True Color Spark Cartridges with safety membrane. These 7 Magnum Needles are stacked and specially designed to allow the shader to hold more ink. This makes it easier for the artist to shade, blend and fill in solid colors more evenly. 

Technical Specifications:

• Box of 20
• 316L Medical-grade Stainless Steel
• .35mm needles with a 5.5mm taper

Product Features:

• Pre-soldered
• Sterile
• Individually packed with expiration date
• Very economical