This is a drill block intended for drilling holes for cabinet rails. It is specially designed for soft close cabinet guides - homdiy HDSCH114SNB 1-1/4 inch face frame kitchen cabinet guides, a 4-pack guide with built-in dampers.
To use it, it is simply printed, placed on the edge of the board and clamped in place. Then drill all 3 holes deep enough to leave a mark. Then remove the block and drill deeper as needed to achieve the correct depth needed for the handlebar and plug to fit.
The product was designed by
dextr327