Interstate Offset Boring Head, 4″ Diameter

• 3-3/4″ overall length, boring bar hole size 1″, cross hole size 1″, offset 1-5/8″
• 1-1/2″ x 18 threaded back
• This head fills the need for a sturdy, large capacity tool, yet weight and bulk are held to a minimum
• The 2 hole bar holder increases the boring bar range without the necessity of an extreme offset adjustment
• The cross hole as well as the double-hole bar holder will accept boring tools or boring bars with a 1″ diameter shank
• A single set screw on an improved gib locks the sliding bar holders in boring position
• A 1-1/2″ x 18 threaded back permits the adaptation of a variety of shanks

Features:

Offset boring heads feature an adjustable sliding measurement for centering the tool with the hole for better accuracy and finish.