This Drill Chuck Kit converts tools with a No. 3 Internal Morse Taper Spindle into a 3/4 inch, 3-Jawed chuck. This system is compatible with the both Milwaukees Super Hole Shooter Drill 2404-1 and Electromagnetic Drill Motors 4292-1 and 4297-1. Kit includes a 48-66-2000 chuck and 48-07-0100 Arbor.