Very impressed- the items I ordered are guides for Lishi key cutting pliers (i.e. for cutting a key for a lock). I got two different sets/types of guides in case one didn't work out and both were perfect. The cuts (or bitting) on keys have very small differences between them- in this case 0.15 inches- so if the guides are off by a small amount the cuts are wrong and the key doesn't work. The vendor did a perfect job and the guides work great. If you are on the fence about trying Treatstock, give it a try. I couldn't be happier.
I have used CRK Technologies quite a few times for almost 2 years now and I always come back to them. They are fast and reliable and produce a great print and their service and pricing are very competitive.
The product is extremely high quality and received in a timely manner. The supplier was very good at communicating the challenges with my order ahead of time as well. I've used this supplier multiple times now and each project has been amazing.
crK Technologies 
