Four devices in one: Smaller pad. Greater versatility. The new ROTEX RO90 geared eccentric sander with the tried-and-tested ROTEX principle makes quick work of coarse sanding, fine sanding and polishing tasks. Now suitable for working in corners: The FastFix interface can be used to replace the sanding or polishing pad with a triangular pad, and the ROTEX RO 90 becomes a delta sander.