• Double action rigid handle with self centering feature for quick checking of inside measurements.
• Constant spring tension for uniform feel.
• Contact point ends are hardened tool steel and precision ground on a radius of the smallest hole the gage will enter.
• Covers a measuring range of 5/16" — 6" with a measurable depths of 4" to 5"
• Letter code: A thru F
• Includes fitted vinyl case.