Instruction: Given a question and the related document, predict if the question is answerable based on the information provided in the document. Output only yes or no.

Input:
Question: Can you tell me the purpose of the 2 little black parts between the jaws?
Document: This set of (2) 24" and (2) 50" Revo clamps was a great deal at around $155. (currently selling for around $195.) I have a total of around (18) Revo and the older K-body design. The clamps are very high quality and I have been using them for many years without any problems. The packaging problem (poorly packaged resulting in broken parts) may no longer be a problem. My recent order was delivered with no problems.
I definately recommmend as a general purpose clamp for the workshop.
If you order, be aware that it might take some time and a little bit more money to get what you want.
The clips were installed backwards and zip tied. This way the longer part of the clip is within the clamp jaws and more protected. Maybe I just got lucky, or maybe things have improved...
The (2) 24" clamps were in a cardboard box and the (2) 50" were in another box. Both boxes were well fitted into a third shipping box. It looks like Bessey/Amazon have learned their lesson regarding shipping damage problems. The price on Revo clamps has increased over the past 18 months and this may be a result of the higher cost of improved packing.
Bought 4 sets of these clamps along with 4 sets of the 50" and 4 of the 60". When they arrived I opened all but two boxes,2 complete sets were broken and the set of 60'ers had the end caps missing. Other reveiws are telling you that packing is the problem, I'm sorry but a clamp should not break during shipping. The latest reveiw was written in 09 I assumed they would of solved this problem by now. These clamps are just cheaply made.
)So what's my complaint? Unlike everything else Amazon has shipped to me this holiday season, these clamps (keep in mind this was a Christmas gift) were in their ORIGINAL NORMAL PACKAGING on my front door step. No traditional brown box or bubble wrapped package discreetly covering the identity of the product inside...No! 2 weeks before Christmas, my husband gets to the door BEFORE I get home from work and now his 'big present' has been ruined this year. Thanks a lot Amazon!!
Got to use it once so far. They're easy to use and the grips are easy to twist when you need to really clamp down. 1st time owning parallel clamps so I can't compare them to similar clamps. The 50" pair is a little too long for my use, at least right now, but got them because they were better priced than the 40".
Product lives up to billing. It arrived in perfect condition with all parts intact. Very happy with the product, look forward to many years of use. Highly recommend.
The clamps are great. The blocks are very helpful. The packaging was terrible. Two of the clamps were broken on arrival and I had to arrange for replacement parts. Amazon customer service was excellent through that process, however. 5 stars if the packing was better.
Answer: yes