What's in the box:

1 X 4Pcs 1.98u2019u2019 Stainless Steel Boat Trailer Bearing Buddy Bearing Protectors with Dust Caps (Standard), Standard

Features:
Chrome plated construction.
These bearing protectors have been specially designed to include an overflow hole in each unit which allows surplus grease to escape.
Protect your bearings from dirt & water.
This bearing buddy measures 1.980 inches at its base. It is designed to be used in most 4 and 5 bolt hubs.
Ideal for boat trailers, boxtrailers, car trailers and horse floats.

Specifications:
Material: aluminum alloy
Fitment: Suit Most 1-3/4" (45mm) Trailer Hubs
Package size: 22.5 * 7 * 6.8cm / 8.85 * 2.80 * 2.67in
Package weight: 895g / 31.6oz

Package List:
4 * Bearing Protectors

Easy to Install
Simply remove your dust caps from your hubs, place the bearing buddies in place with a piece of wood over them, and tap them firmly into place.
The bearing buddies are then filled with grease via the grease nipple on the end, and supply the bearings with a constant supply of grease, eliminating water intrusion and bearing failures.
It is always a good idea to pump grease into the buddies before putting the trailer in the water, till grease starts to come out the overflow hole. This ensures the bearings are well packed with grease and prevents water getting in and wrecking your bearings.