Technical Specifications Rated Power: 550 W Sanding Pad Diameter: 215 mm Sanding Sheet Diameter: 225 mm No-Load Speed: 340–910 RPM Weight: 4.8 kg (standard version) Power Source: Corded Electric Speed Preselection: Yes Constant Electronic Control: Yes Soft Start: Yes Dust Extraction Connection: 45 mm Sound Pressure Level: 87 dB(A) Sound Power Level: 95 dB(A) Description Drywall Sander Bosch GTR 550 Professional is a powerful 550 W professional sander designed for efficient sanding of walls and ceilings, especially drywall, plaster and filler surfaces. It features a 215 mm sanding pad, variable speed of 340–910 RPM, Constant Electronic control and Soft Start for smooth and controlled operation. The flexible head allows easy movement across walls and ceilings, while the quick-release brush segment enables sanding close to walls. Ideal for: Drywall sanding, plaster sanding, wall and ceiling preparation, filler sanding, removing old wall paint, renovation, painting and professional interior-finishing applications.