Titanium bonded jaws are 3x harder than untreated steel and will stay sharper longer. Resists corrosion and adhesives.

Size 5/16 - 1/2". Double action (self-centering) contact point ends are made of hardened tool steel and precision ground on a radius of the smallest hole the gauge will enter.

19/64" (0.2969), 135 degree split point. High speed steel. 6" Aircraft Extension series

27/64" (0.4219), 135 degree split point series. High speed steel. 6" Aircraft Extension series

N (0.3020), 135 degree split point. High speed steel. 6" Aircraft Extension series

9/32" (0.2813), 135 degree split point. High speed steel. 6" Aircraft Extension series

#35 (0.1100), 135 degree split point. High speed steel. 6" Aircraft Extension series

L (0.2900), 135 degree split point. High speed steel. 6" Aircraft Extension series

Size 1/2"-3/4". Double action (self-centering) contact point ends are made of hardened tool steel and precision ground on a radius of the smallest hole the gauge will enter.

Size 3/4"-1-1/4". Double action (self-centering) contact point ends are made of hardened tool steel and precision ground on a radius of the smallest hole the gauge will enter.

Size 1-1/4"-2-1/8". Double action (self-centering) contact point ends are made of hardened tool steel and precision ground on a radius of the smallest hole the gauge will enter.

Size 2-1/8"-3-1/2". Double action (self-centering) contact point ends are made of hardened tool steel and precision ground on a radius of the smallest hole the gauge will enter.