At "first look", the brackets look kinda "cheesy", seeing as the wall bracket is made from 0.04" (1 mm) extruded aluminum and the speaker bracket is made from 0.05" (1.26 mm) extruded aluminum. However, my "fears of cheesiness" were allayed when I attached them to the speaker and wall - THEY ARE QUITE STRONG!
The included "bubble level" for the wall brackets is a GODSEND! as long as you follow the directions on the wall bracket, you WILL NOT have an "off-level" wall bracket! Be careful though: the level WILL "FALL OUT" OF THE BRACKET if you're not careful to remove it AFTER you mark the 2nd drill hole in the wall and "pivot" the bracket for drilling. The bracket uses TWO of the LONG screws for mounting (either in a stud or using the included drywall anchors).
The speaker bracket mounts Just As Easy. Find the "center point" on the top of the rear speaker, align the bracket so it's flush with the top "inner edge", and screw the bracket to the back of the speaker using two SHORT screws. Apply two of the included clear "bumpers" to the lower back corners and you're ready to mount the speaker to the wall.
Here is where I didn't give a 5-star rating: Using a pair of long-nose pliers, I had to slightly "bend out" the speaker bracket so it would engage the wall bracket edge. However, once the speaker bracket "engages" the wall bracket, a couple of "raps" on the speaker caused the brackets to fully "mesh", and "mesh" QUITE TIGHTLY! You can slightly adjust the speaker from side-to-side (i.e., "center" it) by "rapping" on the speaker sides. Your fist will do - no need for a hammer!
Once the speaker is mounted, IT WILL NOT MOVE! the "bumpers" on the bottom corners will help prevent unwanted "vibration" as well as keep the speaker from "moving" later on. If you need to "unmount" the speaker, give it a few sharp "raps" from the bottom to disengage the mounts.
1) PAY HEED TO THE LOAD RATING! these brackets are made for "bookshelf" type speakers that weigh LESS THAN FIFTY (50) POUNDS! anything heavier could risk "ripping" the wall mount from the wall.
2) DO NOT install the SPEAKER bracket lower than one-third the speaker's height (i.e., if the speaker is 12" tall, mount it NO LOWER than 4" from the top edge). This will prevent "lever effects" from potentially "ripping" the wall bracket from the wall (especially if mounted with the DRYWALL ANCHORS).
3) For the drywall anchors: DO NOT drill a hole LARGER than 3/16" or the anchor will not properly "seat". If you don't have a 3/16" drill bit, the shaft of a #1 PHILLIPS will punch a perfect-sized hole. Install the anchor then lightly "tap it flush" into the wall.
4) If you do need a drywall anchor, try to align the bracket so one of the screws goes in a wall stud. This will guarantee the drywall won't take "the full load" of the speaker.