Pilot Hi-Tec-C refill. Cannot be used without the pen body! 0.4 Gold Silver Metallic Blue Metallic Green Metallic Violet Metallic Pink Fluorescent Red Fluorescent Yellow Fluorescent Green Fluorescent Purple Fluorescent Orange Fluorescent Pink White Pastel Blue Pastel Green Pastel Orange Pastel Violet Pastel Pink Total: 18 pieces Thank you.