M137-S. Pentel Sparkle Pop Gel Pen
This shimmering iridescent gel pen uses a innovative new reflective and sparkling ink with ultra-glittery finish. The ink colors look different on white and black paper. 1.0mm metal tip is bold and shows off the 8 gorgeous dual-color metallic inks. Set includes: Black-Red, Blue-Green, Gold-Gold, Green-Blue, Orange-Yellow, Pink-Pink, Silver-Silver, Violet-Blue.
Absolutely love this pen set. They are bright and and color/write perfectly. I've already bought my 3 set.