An assortment of magnetic chucks, Phillips drill bits, and square drill bits from The Hillman Group. Drill bits are used for drilling screws into wood, masonry, sheet metal and plastic. Variants included in this assortment range from #1 to #3 in drill size and come in 1" and 2" lengths. Full assortments of #4820 contain eleven (11) refills comprised of Hillman item numbers #4821 - #4831.