Annular Cutter Extension Arbors Individual & Sets  3/4" x 2", 3", 4", 6", 8"  Long for Mag Drill Units ID 1661

Arbor Extensions are used to extend the reach of the magnetic drilling machine.

This allows a machine to cut through say a box section where the material thickness may only be small but the sections to be cut through 

are 2\", 3\", 4\",6\",   etc apart