APT Precision Boring Head - Overall Length : 3-3/16" THREAD BACK: 7/8"-20 Offset: 3/4"

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Feature

Direct reading .001" micrometer dial.
Precision hardened steel.
Boring capacity: up to 4" hole
Head Diameter: 2-1/2"
Hole Diameter: 1/2"

Description

Vertical Hole Spacing: 3/4"