Universally applicable: For various eccentric/rotary grinders compatible with ETS 150, ETS EC 150, LEX 150 and WTS 150/7. Durable: Made of high-quality, durable rubber for consistent finishing results, even wear, and extending the life of the sanding pad. Easy to install: Simple screw-on mounting, efficient dust extraction. Velcro closure for quick sandpaper changes. Package includes: 2 sanding pads.