Second Hand MXR Slash Octave Fuzz Pedal - Andertons Music Co.
Jim Dunlop MXR SF01 Slash Octave Fuzz Black : Amazon.co.uk: Musical Instruments & DJ
MXR SUBMACHINE - One of the best pedals if you want to play doom metal at home. Has anyone doomed on the Slash octave fuzz? More info in comments. : r/guitarpedals