Forstner Bit Extension Length:4" (1) 5 mm Hex Shank

(1) 5 mm Hex Shank Drill Bit (Stepped)

No additional extension hardware required

(4) Workbench Casters

This adjustable mobile base can expand up to a 32x32 inch square

Forstner Bit Extension Length:4" (1) 5 mm Hex ShankForstner 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