The LENOX Tools 2L Arbor with 4-1/4" Pilot Drill Bit is a durable mandrel manufactured of hardened carbon steel with a black oxide finish that resists oxidation for a long life. Designed with a split point, the self-centering drill penetrates quickly with less walking than standard points while the power groove shank allows arbors to be used with the LENOX Uni-Drive Quick change system. Easy-to-use, simply screw the hole saw onto the arbor, slide up the drive pins, and lock it in. The arbor also allows you to replace the pilot bits with just a hex key and a set screw. Works with hole saws 1-1/4" - 6".