Based on this product's specifications, here are some alternatives and similar models
Riff Universal PLA 1.75mm filament wire for 3D Printing Pen - Blue - 10m
Summary description:
Riff Universal PLA 1.75mm filament wire is ideal for any 3D printing pen. Durable, eco-friendly, and easy to use. With this 10m long blue filament, you can create creative and high-quality 3D projects!