1,Safe Material: These 3D pen filaments are made of premium and eco friendly PLA material, safe and nontoxic. 2,20 Rolls: You will receive 20 rolls of 3D pen filament refills in assorted colors, meeting your different needs for printing. 3,10.9yd Per Roll: Each color of these 3D pen PLA filaments is approximately 10.9yd long, giving you more options for creation. 4,Smoothing Experience: These printing pen filaments provide fast molding, no cracking and no clogging of output ports, giving you a smoothing experience. 5,Perfect Gift: These print pen PLA filaments in assorted colors are great gift set for your kids and art lover to have fun with crafting and drawing. Item Type: 3D Pen Filament Material: PLA Length of Each Roll: Approx. 10 Meters / 10.9yd ( Manual Measurement, Slight Error May Exist ) 20 x Roll of 3D Pen Filament Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.