Check the listing for details. 4 Trailer 1.98" EZ Lube Grease Hub Cover Dust Cap w/Rubber Plug. Condition: New. Listed at 6.98 USD. This grease hub cap is designed for use with trailers and is made by Dexter, a trusted brand in the industry. It comes with a rubber plug and is 1.98 inches in diameter, making it a perfect fit for many different trailers. In addition, it is easy to install and use, and it comes with a warranty for added peace of mind. The California Proposition 65 Warning applies to this product, as it may contain chemicals that cause harm. However, the specific chemicals have not been identified, so the warning is general in nature. This item is perfect for those who are looking for a replacement or upgrade for their trailer's grease hub cap.This grease hub cap is designed for use with trailers and is made by Dexter, a trusted brand in the industry. It comes with a rubber plug and is 1.98 inches in diameter, making it a perfect fit for many different trailers. In addition, it is easy to install and use, and it comes with a warranty for added peace of mind. The California Proposition 65 Warning applies to this product, as it may contain chemicals that cause harm. However, the specific chemicals have not been identified, so the warning is general in nature. This item is perfect for those who are looking for a replacement or upgrade for their trailer's grease hub cap.