1. Remove the old tire from both wheels and clean any remaining adhesive from the wheel surface; 2. Note: Do not use glue or other hard plastics. Suitable adhesives include neoprene, polyurethane, or rubber-based adhesives; 3. After applying adhesive to the plastic, wait 5–8 minutes before attaching the wheel cover. Allow 24–48 hours for full curing before use; Positive and negative distinction: The tread pattern on the wheel cover is divided into two orientations—one designed for the ground side (referred to as positive) and one for the wheel side (referred to as negative). When installing the tire cover, ensure correct orientation—do not reverse the sides. Positive side: From the outside, the lines appear vertical; Negative side: From the outside, the lines appear horizontal; The positive side has lower resistance, while the negative side has higher resistance. Incorrect installation may reduce durability and shorten service life. Material: Plastic Color: Black Package Contents: 2 x Caster Wheels Note: Light reflection and display settings may cause slight color variations between the image and the actual item. Measurement tolerance: ±1–3 cm.