[1 kg PLA Spool x 1 & Build Surface x 1] -- Each PLA spool comes with 1 piece of quality 200 x 200 mm / 7.88'' x 7.88'' build surface to support Overture filaments. Grid layout on the surface for easy resizing | [Clog-Free & Bubble-Free] -- Designed and Manufactured with Clog-Free patent to guarantee a smooth and stable printing experience with these PLA refills. Complete drying for 24 hours before packaging and vacuum sealed with desiccants in nylon re-sealable bag | [Less -tangle and Easy to Use] -- Full mechanical winding and strict manual examination, to make sure the line tidy and less-tangle, so as to avoid possible snap and line breaking; Larger spool inner diameter design makes feeding smoother | [Dimensional Accuracy & Consistency] -- advanced CCD diameter measuring and self-adaptive control system in the manufacturing guarantee these PLA filaments of 1.75 mm diameter, dimensional accuracy + / - .05 mm; 1 kg spool (2.2lbs) | [Cost-effective and Wide Compatibility] -- With over 8 years' 3D filaments R & D experience, thousands tons of filaments output every month, Overture is capable of manufacturing all kinds of filaments in large scale with premium quality, which contribute to Overture filament cost-effective and reliable for most common 3D printers, such as MK3, Ender 3, Monoprice FlashForge and more