Brand NEW! S2 Chrome Vanadium Steel Rockwell hardness of 58 - 62 Hard case to keep the bits organized This Kobalt 100-piece ultimate screwdriver bit set includes the most popular screwdriver bit sizes. Twelve (12) different style tips to cover most jobs. Includes hard to find security style bits. Made of durable S2 steel for long life. S2 Chrome Vanadium Steel Rockwell hardness of 58 - 62 Hard case to keep the bits organized Contains three (3) each: PH0, PH1, PH2, PH3, SL6-8 Contains two (2) each: PZ0, PZ1, PZ2, PZ3, SL3-4, SL8-10, SL10-12 Contains one (1) each: H1.5, H2, H2.5, H3, H4, H5, H5.5, H6, H8, H1/16-IN, H5/64-IN, H3/32-IN, H7/64-IN, H1/8-IN, H9/64-IN, H5/32-IN, H 3/16-IN, H7/32-IN, H1/4-IN Contains one (1) each: T8, T10, T15, T20, T25, T27, T30, T40, T45 Contains one (1) each: Clutch 1, 2, 3, Cross X6, X8, X10, Spline 5, 6, 7, and Y Tip Y1, Y2, Y3, Y4 Contains one (1) each: 1/4-IN x 1/4-IN Socket Adaptor, 1/4-IN x 1/4-IN Bit Adaptor and 2.5-IN Magnetic Bit Holder - All international buyers are responsible for all tax, duties and/or customs fees.