Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: Does bearing buddy mod#1980 protect inner and outer wheel bearings
Document: There are imitators of respectable quality, but why bother. This is the real thing for a few dollars more. Bearing Buddy has maintained their quality. I maintain 14 trailers for myself and my charity. I would recommend them as a good investment on any trailer, marine or otherwise.In marine use, Bearing Buddies should be pumped with grease until full, before and after each submersion. Any evidence of water being ejected means the seals are bad and should be replaced before any extended mileage on the trailer. If properly maintained, with bearing buddies, the bearings will last indefinitely.
this is a great product that saved me time and trouble with my trailer wheel bearings,  10 minute instalation with a block of wood and a hammer,  a couple of minutes with a grease gun to  grease em up. be sure to buy the plastic protector caps for a few extra dollars.
its a Bearing Buddy... time tested and works as expected. they should automatically include the boot for these but they don't.
As a boat owner, the cost and risk is high enough. I don't need the worry of my trailer hub and wheel popping off the axel due to a bearing failure. Just buy it and watch some vids on trailer maintenance.
What can I say - Bearing Buddies have been around for many many years. I recently bought a 1996 Bayliner with no documentation on the trailer. To me Bearing Buddys are cheap insurance against trouble on the road, since the nearest body of water is 80 miles from where I live. Had a little problem figuring out the exact model to get, but called Bearing Buddy and they confirmed that I had selected the right model. Their technical support folks were courteous and knowledgeable too. Best price & free 2-day shipping with Amazon Prime - as expected.
Gently overfilling the the bearing buddy until old grease is displaced through the bearing buddy seal, allows inspection of the old grease and any incursions of contaminants like water.Investment in bearing buddies costs a small fraction of the cost of a single bearing replacement, that is likely to result in a breakdown on the road with a ceased bearing.After 40 years of towing dozens of trailers, I regard it as foolish not to have bearing buddies on all trailers.As a safety side note. I have changed over the hitch couplings on all my long haul trailers to Hammerblow Bulldogs, at my first convenience.
It's funny how little reviews there are here for Bearing Buddys. If you look at the ads for boats for sale, some will post the fact that their trailer has these. I thought big deal...why post that fact. Well, I bought a boat with a trailer. The previous owner had a good boat but didn't maintain it the way it should have been maintained and did the same with the trailer. I saw the hubs didn't have any cap of any kind so had them serviced. I needed new hubs, races and bearings.
I was replacing bearings every year; and hearing them way before that. I installed the bearing buddies and spindle seals and I think it will take care of the problems and keep my bearings lasting for several years. If I get two years out of them, they have paid for themselves, especially if they keep my from a side of the road breakdown. Easy to install and maintain.I installed the buddies when I replaced my bearings, filling up the cavity in the hub with as much grease as it would hold to make filling with the buddies easier.
I had a generic one on before, it leaked grease everywhere. Got tired of cleaning wheel. The caps also seem to stay on better than the off brands. Stick with the original.
Worked great, I used to replace the old standard hubs / bearings. I just give it a little oil before I go out and no issues. GREAT BUY! No more taking apart hubs every season!
Answer: no