Description there are 2 rolls included. One is 10' and the other is 13' foot long. Should be enough to do a machine. Keeps junk from collecting in the grooves. Looks cool too The product is a 23-foot blue plastic roll groove cover welting designed for Creality 3D printers, specifically the CR-10, Ender 3, and Ender 5 models. It is compatible with universal brands and is used as an accessory for 3D printers. The roll spool cover welting helps to protect and store the filament spool while in use, ensuring smooth and reliable printing. Ideal for users looking to maintain the quality and functionality of their 3D printers while adding a touch of color with the blue plastic material.