Product review (5 stars): Solid product and easy installation
Solid product.  Instructions were great and made the installation easy.  Any beginner DIYer can do this.  My washer manual said I needed the 5K-5A stacking kit, but that no longer exists.  This kit worked perfectly! Washer: Samsung WF350 and Dryer: Samsung DV365.

I also bought some vibration pads to use on the feet of the dryer but they will not work.  The rails need to rest on the washer and the pads will only cause problems doing so.  Plus the back feet hang off the edge of the washer.  Do not buy vibration pads for the dryer.  They are not needed.