Replacement part compatible with Roomba iRobot 5/6/7/8/9 I7 E3 E5 series models. Pack with two rubber tires compatible with iRobot Roomba FEATURES -Non-slip, the wheel will not skid on the floor of your house, it will avoid robot breakdowns and make cleaning more efficient and wear-resistant. It can withstand all kinds of shocks. Tests carried out by experts, give us the confidence of durability, elasticity and high adhesion on all surfaces (terrazzo, parquet, parquet floors, smooth and rough floors). -Easy to assemble, please follow the instructions mentioned in the below. We are going to specify the 4 steps to follow to disassemble the wheels of your iRobot vacuum robot. STEP 1 Disassemble the wheel of the vacuum robot, unscrew the bottom cover of the iRobot then the wheel, once the two wheels are removed, we go to step 2. STEP 2 Remove the old tire from the wheel module. Then with a flathead screwdriver or similar object, insert it between the rubber to be removed and the plastic, then pull the tire and the points that join it to the wheel come undone. OPTIONAL: With a blow dryer or stripper, apply heat to the tire area (CAUTION AT START), this will expand the rubber and make it easier to remove. STEP 3 Place the tire over the diameter of the wheel and press down to seat the tire securely in place of the removed rubber. STEP 4 Put the wheels back on the robot. Once the tires have been changed, mount them by performing the reverse procedure of step 1 and your Roomba is ready to roll again. Scope of delivery: 2 pieces