Irwin No. 22 Expansive Bit for Your Brace
This is a good used adjustable expansive bit with the adjustable cutter insert. This is the graduated cutter model, with inch graduations to set the adjustable cutter to the size needed (gear driven). The range on this one is from 1-38" diameter to about 3" diameter. It is marked on the shank "IRWIN NO. 22 US OF A". It is sharp and in very good used condition, very clean, no rust, sharp and ready to use.