Drill bits have a 118° cutting head and are made from #4241 high speed steel that resists heat for durability.
Includes: 21 drill bits sizes 1/16"-3/8".
Also includes 41 extra bits of the 4 most popular sizes: (18) 1/16", (14) 1/8", (6) 3/16", (3) 1/4" in storage tubes. Plus, a storage box!