This is the kit....
The machined posts replace the M8 & M10 bolts in your rear fender covers (4 bolts in total) and the bracket (Once fitted to your back rest) will locate the front posts first then drop down into the rear posts.
Once the bracket is in position the bolts can be tightened using an 8mm &6mm hex key/wrench, then this bracket wont be moving anywhere in a hurry. Yes you will have to carry two alen/hex keys/wrenches with you to remove and refit.
The machined posts sandwich the steel bracket.