PS: All dimensions are measured manually with deviation （ranged）at 1-3mm.
We truly believe we make some of the real and good-quality products in the world, and we want to make sure we back that up with a risk-free ironclad 30-day guarantee. If you don't have a positive experience for ANY reason, we will do WHATEVER it takes to make sure you are 100% satisfied with your purchase. Buying items online can be a daunting task, so we want you to realize that there is absolutely ZERO risk in buying something and trying it out. If you don't like it, no hard feelings we'll make it right.