Each spool of PLA filament comes in a random color, adding an element of surprise and excitement to your 3D printing projects. With options to choose from 50M, 100M, and 200M lengths, you can select the perfect amount of filament for your project needs. The 1.75 mm diameter of the filament ensures compatibility with most 3D printing pens, making it a versatile choice for all your printing needs. Made from solid PLA material, this filament is durable and long-lasting, ensuring that you get the most out of your 3D printing investment.