Description Adhesive edge protector for use with our Collapsible Classical Guitars with standard 52mm nut widths. This self-adhesive protector protects the edges of the neck slot and latch slots on our traditional classical model collapsible guitars. This set includes one protector for the soundboard, and one side protector for the latch mechanism area. It is compatible with all collapsible classical guitars with a 52mm nut width such as the OC520, OC520, and FC522.