Apply to for Braava 320380 380T mopping robot wheel tires, but also suitable for Mint 420042055200 5200C and other models. Instructions for use: 1. Tear off the old rubber on the two wheels and clean the remaining glue on the wheel; 2. Note: Do not use AB glue and other hard plastic, you can use Wan Nengjiao, 100 of plastic, neoprene 3. After the plastic finish, over 5-8 minutes and then affixed to the wheel, posted after 24-48 hours to use Peel positive and negative distinction: The treadmill on the mop is divided into two sides, one on the ground (we call it positive) and the other with the wheels (we call it the opposite) Everyone in the replacement of the tire skin, we should pay attention to the positive and negative do not paste the . Positive: from the outside, its lines are vertical Negative: from the outside, its lines are horizontal straight Positive resistance is small, the reverse resistance is greater, if posted , will be less wearable, the service life will be slightly short. Colour: Black Material: rubber Package Contents: 2pcs * Caster Wheels 2pcs * rubber band Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.