General description Replacement parts are compatible with iRobot Roomba i3, i3+, i6+, i7, i7+, E5, E6, and E7 series vacuum cleaners. This replenishment kit includes dual multi-surface rubber brushes that are uniquely designed with rubber treads to contour to different floor surfaces, effectively removing everything from small dust to large debris. Technical specifications Color: Green Material: Plastic Package Contents: 6 Pairs Roller Brushes Measurement allowed error: +/- 1-3 cm