Forstner bit extensions solve one of the major problems with forstner Bits -- their limited depth capacity. This extension fits WoodRiver forstner bits only that have 3/8" diameter shanks.

Features:

• Designed for use with WoodRiver forstner bits only
• Extension adds 2-1/2" to length of forstner bit
• For use with forstner bits 7/8" or larger
• Socket accepts forstner bits with 3/8” diameter shanks
• Forstner bit held in extension socket with two set screws
• 3/8” diameter drive shank allows use of multiple extensions