Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: Is headset lock gator grip proof?  I did not see locking washer.
Document: Very easy to install. Took at most 30 mins to change out skewers and seat lock. Thought that the expense was a bit much but after receiving the wheel locks I can see that they are well made and worth the cost. They also came with the special washers to stop the use of Gator Grip sockets. I do recommend that you get the full set so you only have the one key for all the locks.
Just got the set and its amazing, the old gator grip trick to open doesnt work anymore with thr new washer design. Now when i lock my bike i dont have to take the wheel out and lock to the frame. I had hydralic disc brakes and someone played with my bike while it was locked up by squeezing the brakes. Turns out hyrdralic brakes get locked up when younsqueeze them with no wheel in. 60 to get fixed plus had to walk home. Not ever again with this productThanks!
I very much like having the locking wheel skewers, and the headset lock is a good addition to that (if you have the correct type of headset, which is easy to check).My complaint is that the seat lock has very mixed compatibility: It replaces the bolt in your seat clamp, but requires that the bolt hole be sufficiently large. You also need enough flat(ish) space on either side for the ends to sit.
I already had a set of these for one of my bikes, and I decided to get another set for my new bike. Everything works great. The set now comes with a special washer so it can't be removed with gator grips. The rear wheel skewer was just barely long enough for my bike. Sadly the seatpost lock was incompatible with my seatpost clamp.
Unfortunately, these locks are easy to open without use of the key and bike thieves know about it. I recently had my rear wheel stolen while using Pinhead skewers. After asking at local bike shops, I've discovered that they can be opened with a universal socket such as the product from Gator Grip &lt;...>Update on Aug 2013:I received a set of washers from Pinhead to use to prevent the locks from so easily being opened.
For those concerned about thieves defeating this product with a universal socket such as the Gator Grip, the company now has these "security washers" that prevents such tools to be used. If for some reason you didn't receive one with your order OR you currently have one, contact pinhead and they will send you the washers for free.With that being said, quality appears well made. Parts have no gotten loose on me yet.
Just recently installed these locking skewers. Very nice, I noticed little to no difference in the ride quality. I also feel a bit safer locking up my bike. I no longer need to carry my front wheel with me. I do recomend Pinhead locking skewers.Pinhead Bicycle Locking Skewer Set, 4 Pack
I installed the locks on my bike, and they seem to be working so far... I ended up taking the one off of the seat post because i couldn't get it to tighten enough... i need to re apply it and see if there was something i was missing.
I have had this for some time now and it has brought me peice of mind when I leave the bike outdoors for periods of time.the problems are:the seat post  lock is either too loose or doesn't lock tight, I need to keep adjusting the seat post.it only comes with one key  and atm I don't know where it is, but if registered with the manufacture you can get a spare set for $10 I believe.
Front fork has just under .125" of the skewer exposed past the nut. The stem lock fit fine.Only issue I had was the seatpost lock. Looks like I may need to get a different seatpost collar. The collar that came with the bike is tapered on both sides, therefore the bolt that comes with the Pinhead kit would only rest on part of it, leaving it exposed and possible to cut the head of the bolt.
Answer: yes