AC Delco 3/8” Composite Drill Model Number: AND303 AC Delco 3/8” Composite Drill Compare View Product AC Delco 1/2” Composite Drill Model Number: AND404 In-use data available AC Delco 1/2” Composite Drill Compare View Product AC Delco 3/8” Drill Model Number: AND301 AC Delco 3/8” Drill Compare View Product AC Delco 1/2” Drill Model Number: AND402 AC Delco 1/2” Drill Compare View Product