Ferrite ring by Micrometals, part number T106-0. Colour is pink/ tan. Constructed from no. 0 material.
Used in RF circuits from 100-300MHz. Permeability 1.
Dimensions:
Outer diameter - 1.06" / 26.9mm.
Inner diameter - 0.57" / 14.5mm.
Thickness - 0.437" / 11.1mm.
Sold singly.