Lasts up to 3 times longer than standard coated hand sanding sheets. High-quality metalwork requires a high-quality finish – and for that, you need a good, consistent abrasive. The Expert N880 is not only effective when first taken out of the packaging; it remains in good condition over a long lifespan and delivers a uniform finish. The Expert N880 non-woven disc is an example of Bosch's Surface Structure: it combines the latest sanding technology and manufacturing expertise into a single, exceptionally durable non-woven material. With the three-dimensional product featuring Cross-Laying technology, professionals save money thanks to its long-lasting performance. Additionally, they no longer have to deal with hand sanding sheets that lose their grit. Whether you're finishing a metal component with precision, cleaning a workpiece, or sanding a hard-to-reach surface – the Expert N880 is the best choice for the long term. Easy attachment with Velcro. Grit: 320, hardness grade: very fine GP, diameter mm: 125.