I don't usually write many product reviews. HHIP's customer service has really impressed me. That's why I want to participate in the evaluation. I bought a perforation set two years ago. After using them occasionally on my hobby projects, I found that the prints on his stand weren't very clear. I have contacted HHIP. They responded quickly and offered a replacement. I believe this is top notch product support on par with some much more expensive brands like Woodpecker, Incra, Leevalley, Vertas etc. This has shown that HHIP fully supports their product and I am very confident in purchasing from them in the future. For the stamps themselves, the size is accurate and the waves are straight. Everything worked out for my hobby projects.