Great for keying large old door locks, the heavy steel blank key has an overall length of 3".

Measurements below could differ slight depending upon the castings, you can compare these measurements to the chart in the photos if you are unfamiliar with the terms.

Total Length: 3.155"

Shank Length: 2.388"

Shank Diameter: .240"

Post: 1.0"

Bit Width: .657"

Bit Length: .839"

Collar: .313"