2 Pack Trailer Bearing Protectors 2.441 Inch Dia Stainless Steel Aluminum Alloy for Boat Trailers Auto Check Features： 1、STRONG PROTECTION: The trailer bearing protector provides high shields on both sides keeping the lubricant in and contaminants out. Also provides an easy way to protect your well by keeping water out and grease in. 2、SUPERIOR DURABILITY: These bearings with a bra will help save you from serious mechanical problems, made from stainless steel material with high strength, wear resistant, rustproof, and other characteristics, provide strong strength under heavy loads. 3、AUTO CHECK: The innovative auto check feature allows you to view the grease level effortlessly anytime by simply taking the cap off, with such a painless effort comes the special protection for your bearings. 4、EASY INSTALLATION: Designed for simplicity, these bearing protectors are easy to install on your wheel without any complicated procedures. Their user friendly design ensures a convenient installation process. 5、MAXIMUM PERFORMANCE: Constructed to deliver maximum and comfortable performance, these trailer bearing protectors not only protect your bearings but also enhance the overall functionality of your trailer. Specification： Item Type: Bearing Protector Material:?Stainless steel + aluminum alloy Diameter: Approx. 6.2cm / 2.441in Fitment: Suitable for Boat Trailer Package List： 2 x Bearing Protectors