This is fine but I'm disappointed by its size: In fact, the dimensions reported in "product information" are much larger (or, at least, were when I ordered) or 24 cm 7.6 cm. This is also why I chose this product over another! In reality, this booklet is 17 cm by 4.5 cm (4 cm and not like the ad, now the seller). That said, I expected my order since after the seller himself responded to my question on the thickness announced (2.6 cm? !! Which is, of course, incorrect) and took the opportunity to slip the rectified size ... It has also since been informed "Product description" area (but be careful because there is still an error, the height is 4.5 cm and not of 4 cm. This can -be useful) ... for me, too late, I had already ordered. Finally, I positioned the wafer to another location than initially expected and it is as well! If not delivered on time.