Material: Poron Thickness: 3mm How to stick D65 gaskets: Firstly, use 16 gaskets to stick the protruding part of the plate along the edge. Secondly, make sure itβs neatly pasted. ATTENTION: 1. The key step is to use the shortest gaskets for the arrow keys area. 2. Paste it on the right, otherwise it will affect the blocker.