Material: Plastic Outside diameter: 6.38" Position: N/A Color: Black Compatible Brand: Fits Polaris Bearing Series: 6004 Bearing included: Yes Number: 04-0634-20All Kimpex idler wheels are OEM replacements made with Kimpex quality. To make sure you have the wheel you need to change, check the manufacturer's number (OEM), here below, is the same.