Copic’s updated Multiliner SP pens feature a durable aluminum body. The ink is waterproof and pigment based, providing a consistent ink flow that makes drawing and lining easy and crisp. The Multiliner SP pen is also available with a unique brush tip that creates distinctive line variations. Try them with different papers for a different line quality and feel. All Multiliner SP pens are refillable and have replaceable nibs. Choose the correct ink cartridge based on nib size.