Even though the name says “Patrol”, it’s more of a guard, but patrol sounded cooler, and to me they share enough similarities anyway. Also, despite the Nether brick look of it, the deepened parts of it aren’t the divots between bricks, but engravings marked into one big chunk of condensed netherrack. However, the engravings were patterned in a way to make it look like Nether bricks.