✔️Made from Durable Stainless Steel: Protect the wheel bearings from dust & grit which can severely shorten the wheel bearing life. Manufactured from stainless steel durable material for strength and durability. This ensures the bearings are well-packed with grease and prevents water from getting in and wrecking your bearings. ✔️Prevent Wheel Bearing Failure: Prevent wheel bearing failure simple easy installation, no complicated tools needed, a great way to extend bearing life. It maintains the separation between moving parts to reduce rotational friction and support radial and axial loads. Perfect for any vehicle wheels such as a car, bus, snowmobile, and more. ✔️Increase the Overflow of Water from Holes: These bearing protectors are designed to increase the overflow of holes in each unit which allows surplus grease to escape. It is always a good idea to pump grease into the buddies before putting the boat or vehicle in the muddy water, till grease starts to come out of the overflow hole. ✔️Keeps Water and Pollution Out of Wheel: Bearing protectors keeps water, dirt, or road grime out of wheel hubs and bearings. We produce the premium quality, most durable, and most safe auto-check bearings in the world made from the chrome-plated steel exterior shell with stable performance internal parts material. ✔️Provides Strong Protection: Made of premium-quality steel exterior shell with stainless steel internal parts to protect your motorcycle, car, bus rim with strong strength. It maintains pressure and provides strong protection. This Bearing protector also provides an easy way to protect your bearings by keeping water out. 
SUPERIOR RUST RESISTANT MATERIAL The bearing protectors are made of superior durable material and resistance to rust, corrosion, provide strong strength under heavy loads, and also provide high shields on both sides keeping the lubricant in and contaminants out. It will help save you from serious mechanical problems. Premium-quality stainless steel material with high strength, wear resistance, rust resistance, and other excellent characteristics, making this product very durable and has a long service life. With the auto-check feature, you can monitor the grease level anytime by simply taking the cap off, with such a painless effort comes the special protection for your bearings.
VERY EASY AND SIMPLE TO INSTALL Easy and simple to install on your wheel, constructed with specifically designed to provide maximum and comfortable performance. Once installed and filled with the required amount of grease, these bearing partners exert a small amount of internal pressure in the hub. To prevent overfilling, Bearing has an automatic pressure relief feature that allows the grease to come out through the Bearing instead of out the grease seal on the back of the hub. The bearing adopts high-quality stainless steel material with high strength, wear resistance, rust resistance, and other excellent characteristics, making this product very durable and has a long service life.
WIDE APPLICATIONS These bearings are not only used in vehicles such as buses, cars but also used in robotics, dental equipment, elevators, rolling mills, ship rudder shafts, skateboards, inline skates, and more. When the wheels are submerged, pressure from the spring-loaded piston keeps the water out. Spring-loaded piston exerts a slight pressure against the grease that maintains a slight pressure between the inside of the hub and the outside environment. Closed with stainless steel shields to protect the bearing from dust or any possible contamination.