Fully compatible: This replacement rubber brush compatible with for E series E5 (E5134) E6 (E6198) I series i1 i1+ i2 i3 i3+ i4 i4+ i6 i6+ i5 i5+ i7(7150) i7+ (7550) i8 i8+ J series j5 j5+ j6 j6+ j7 j7+ j8 j8+ robotics [EASY TO INSTALL & MAINTAIN] These vacuum brush roller are washable and reusable, clean parts regularly to improve suction power and extend service life. For best results, multi- rubber brushes should be replaced every 1 months PREMIUM QUALITY MATERIAL - The products are made of high-strength and environmentally friendly materials to optimal performance and a healthier lifestyle. HIGHLY EFFICIENT TECHNOLOGY - Dual Multi- Rubber Brushes don't get tangled with pet hair. Brushes adjust and flex to stay in constant contact with carpets and hard floors. EASY TO CLEAN AND REPLACE - Regularly clean and replace roller brush to improve suction and performance and extends the life of your robot vacuum. The appearance of each batch may differ slightly, but not affect the use.