I feared that these sticks are less sturdy than the first brand that filed the concept (for size difference between House of Toys and K .....) and so I questioned the previous buyers. All I have to advise that more favorable product. And actually I am delighted by the quality, strength, quantity and price. So do not hesitate unless you already another brand because it appears that the sticks are not "compatible" between K and House of Toys due to their different sizes. Amazon as always indulge in the time expected. Really great product and my 5 year-old girls do not get enough ... and I admit that I willingly joined for long sessions of improvised and creative constructions.