Product Overview Titanium-coated drill bits provide durability Includes: #6, #8, #10, and #12 Screw Sizes Compatible with SpeedLoad+ and 1/4 in. Hex Chucks Model #: AR2008G Sku #: 1000053588 Internet #: 205193155 RYOBI introduces the SpeedLoad+ 5-Piece Power Groove Countersink Set. This set gives you what you need to set screws flush with or below the surface of a material. Use this set with the RYOBI 1/4 in. Hex Shank Speedload+ Chuck. The Power Groove Countersink Set (5-Piece) includes four countersinks and a hex wrench for changing or tightening the drill bit in each countersink. Use with the RYOBI 1/4 in. Hex Shank Speedload+ Chuck (sold separately) or any 1/4 in. hex shank High carbon steel for drilling in wood 3 sharp edges for clean holes Titanium-coated drill bit in the countersink for durability Includes: (1) #6, (1) #8, (1) #10, and (1) #12 screw sizes and a hex wrench. Comes with a hex wrench