Best Hex Wrenches for PCPs?

Go to Harbor Freight, they sell a great set for about $20 includes both standard and metric.



https://www.harborfreight.com/18-pc-sae-metric-t-handle-ball-end-hex-key-set-63166.html

My personal favorites 



https://www.mcmaster.com/hex-wrenches

It may look weird but I use this wrench (yes it's a wrench not pliers) for everything on my impact and lots of other things. It doesn't scratch anything because the jaws are smooth and there is no feedback when turning a bolt no matter how hard you pull. You'll round the corners on a bolt or nut with a regular wrench way before you would with this one. Opens to over an inch. Read the reviews.

Wera makes the best hex keys. Hands down. Ive learned that good tools are very much worth the money. The Hex+ are ultra precise in the sizing of the heads and designed to not jump out of the bolt head. There are vid comparisons on the tubes. I have this set, orded from them too: https://www.kctoolco.com/wera-022089-multicolor-hex-ball-end-hex-metric-l-key-clip-set/

I think you will have to get a micro set to get into the sub 1.5mm, but there may be some single L keys available.

I'll second and highly recommend Knipex for all your plier needs. I have the full set of the pliers-wrenches and love them.

I was in the hobby business for almost 40 years. We used allen wrenches everyday, all day. Cars, boats, helis, drones, planes. You name it, we worked on it. We had three guys in the service dept working on stuff 8 hours a day. We were heavy users of tools. 

The best hex wrenches will have tool steel / high speed tool steel tips. In the airgun world, you will never wear them out. Precision fit. The problem with tool store wrenches is they wear out/round out the inside of the screw socket as well as round the edges of the wrench itself. 

We used and sold Hudy. Not cheap. But the best we found for the money. There are other brands of HSP steel wrenches found in the hobby industry too. Be aware though, on 1.5mm wrenches if you are not careful and have ham handed you can and will break the tip off. you only need to turn the wrench until the screw stops turning. 

I know it sounds like a commercial but beware of cheap imitations. Some brands have a Nitride coating to improve durability. they don't. 

good luck

In the radio control Heli world where everything is a small Allen bolt, the top tools are MIP Thorpe 

made with hardened tips. An mip Thorpe will often remove a bolt which was damaged by another Allen key.

I second the MIP Thorpe, hands down the very best, Wera Germany is also good but the MIP is just better, however the MIP range is quite limited in sizes so Wera will cover those gaps, check out PB Swiss too.

Been in the RC game for many, many years now and have used many brands of ground tool steel hex drivers over that time as anything less results in stripped screw heads. Another vote for MIP wrenches... you'll probably never strip a hex head again. They are ground very precisely, the handles are comfortable, and the prices are reasonable. Hudy wrenches are also very good.

Unfortunately the ground tool steel RC hex drivers are typically only available up to 3.0mm; larger than that, I use a bit set from Mountz that came with one of their 10-50 in/lb torque drivers. PB Swiss and Wera are also very good as mentioned, but the tips of the PB Swiss & Wera drivers don't fit the screw heads as well as the tools from MIP or Hudy. That being said, for the >3mm heads the slightly looser fit is typically less of a problem since the hex is much larger with more bearing surface. For the smaller hex screws, the ground tool steel wrenches from the RC world are the only way to go if you want the screws to last and not strip the heads out.

I have Bondhus T-handle sets of different types and they also get the job done wonderfully.

I have Bondhus T-handle sets of different types and they also get the job done wonderfully.

Click to expand...

+ 1 on the Bondhus hex keys I've have 3-4 set of other allen keys 

and the Bondhus allen keys have lasted the longest for me . 

Bondhus 20199 Balldriver L-Wrench Double Pack, 10999 (1.5-10mm) and 10937 (0.050-3/8-Inch)

https://www.amazon.com/Bondhus-20199-Balldriver-L-Wrench-1-5-10mm/dp/B00012Y38W/ref=sr_1_fkmr0_3?ie=UTF8&qid=1543077355&sr=8-3-fkmr0&keywords=bondhaus%2Ballen%2Bwrench&th=1

I have these, simply the best for all uses including Guns

I just bought these



https://www.amazon.com/gp/product/B00I5THF4W/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

Another vote for Bondhus.

What about wiha tools? Anyone have experience with their set of hex wrenches?

Bondhus

COA Wiha are awesome quality tools. Ive got their torx set and one of their micro sets.