The replacement parts kit is compatible with for RoboVac 11S, RoboVac 15C, RoboVac 30, RoboVac 30C, RoboVac 2, RoboVac 35C Vacuum Cleaner. This Roller Brush Made of latest high-strength materials,Resistant, Delicate and soft,Captures 99.99% of particles ejected while cleaning, including particles as small as 0.3 microns, expels non-allergenic fresh air. The roller brush is close to the ground, move dust and hair into the groove with high speed rotation,A Quiet Clean rolling brush design significantly reduces vacuuming noise, leaving a quiet space and activities. Regular replacement roller brushes help to maximize cleaning performance,Especially in home with pets,recommend to replace the roller brush every 2-3 months. Colour:blue Material:plastic Package Contents: 3 * Roller brushes Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement