Up to 2 times longer lifespan for multi-hole sanding discs compared to a standard backing pad. Multi-hole sandpapers promise higher effectiveness, longer accessory lifespan, and a better dust-free working environment. To fully benefit from this "dust-free" revolution, you need a compatible backing pad. The Expert Multihole backing pad is an essential component of Bosch's Particle Control System. The seemingly random distribution of holes is the result of extensive research: mathematically, there are always enough holes aligned on the paper to ensure optimal dust extraction. This means your discs won't clog and will last longer. It is available in hard, medium, and soft versions, depending on the type of sanding. The Bosch Expert Multihole backing pad for random orbit sanders is indispensable if you want to sand dust-free. You benefit from better air quality, high-quality work, and a longer lifespan for sanding discs. 150 mm backing pad for random orbit sanders, with adapters for most common tool brands. Design: hard, diameter: 150 mm, hole pattern: multi-hole.