I've purchased several wall mounting pieces from Moen with their built in black connection inserts. One is a towel bar. Another is a glass shelf and the third is a toilet paper holder. The towel bar brackets and the glass shelf brackets will be mounted on drywall. Wall anchors have been included. One set of wall anchors have blades to grip into the drywall while one set is without the blades. Since opening the boxes I'm not sure which set of mounts go with which pieces. The toilet paper holder is to be mounted onto our wooden vanity. I'm assuming the black mounting brackets will use standard screws to hold the brackets in place, but they were not included. The drywall anchors were the only items sent by Moen. It woukl be helpful to know what screw sizes are recommended. Do you have a video showing the installation of these Moen brackets. I do like the Moen bracket concept, but would like to visually see how they would be installed. I'm familiar with mounting towel bars and brackets that get tightened in place with an Allen wrench. I'm just not familiar with the new Moen mounting pieces and a video demo would be great to see. I really do not want to begin mounting the anchors only to find I've done them incorrectly and tear up my wall board. Can you help?