This anchor pack is highly efficient to use for my DIY projects .After i put it to the test I found out that it holds extremely well and it's perfect for hanging heavy objects. The installation process is very easy, just drill a small hole and then screw the anchor. This product is perfect for industrial and scientific purposes. The only con I could say is that it only comes in one size, but it can handle most of my projects. Overall, I highly recommend this anchor pack for anyone looking for a strong and sturdy anchor..