These bearing protectors, will help to avoid untimely and costly grease under pressure, thus guarding against water seeping into the hub and causing bearing corrosion and failure Heavy duty pressure plate and neoprene seal keep grease inside the hub and water out! Exclusive overload outlet allows excess grease to escape if hub is overfilled or excessive pressure is built up Special Requests must be Presented and Approved by us with EBAy Messaging before you Purchase the Item . Buyer may Return an Item if the Item is Returned Within 30 Days of Receipt of Item. If the Item has been Used or Altered by the Buyer, the Buyer may be charged a Fee. Please use Ebay messaging only to Communicate with us. Any other means of Communication will not be read. Any Special Requests or Address changes m