Two matched Germanium PNP transistors. Tested in the Fuzz Face circuit and supplied with biasing resistors. Many tend to be unbranded T0-5 can but may include other body types and numbers. No choice of transistor types for this SKU. Will also work in Bear Face, "Two-knob" Tone Benders, "69", Fuller Mods, etc. We guarantee reasonable noise floor and correct biasing. Purchase Limits apply.