Vertex Steel String MKII Guitar Effects Pedal. The item "Vertex Steel String MKII Guitar Effects Pedal" is in sale since Monday, September 13, 2021. This item is in the category "Musical Instruments & Gear\Guitars & Basses\Parts & Accessories\Effects Pedals\Distortion & Overdrive". The seller is "ryafilli-0" and is located in Wilmington, Delaware. This item can be shipped to United States.