DURABILITY: bits made of high quality chrome vanadium steel for strong hardness that reduce wear-outs and insure longevity, PRECISION BITS: precisely and automatically machined bit tips to ensure accurate size, chamfered bit ends insert smoothly into fasteners and protect both bits and fasteners from damaged edges CORROSION RESISTANT: each bit has sandblasted finish for corrosion resistant ORGANIZED STORAGE: set includes a sturdy plastic organizing case for secure storage and easy carrying 100-Piece Tamper proof security type bit set includes: 8-pc Phillips: PH#0, PH#1, PH#2 x 5, PH#3; 8-pc Pozi drive: PZ#0, PZ#1, PZ#2 x 5, PZ#3; 9-pc Slotted: 3, 4, 4.5, 5, 5.5, 6, 6.5, 7, 8mm; 9-pc Torx Star: T8, T10, T15, T20, T25, T27, T30, T40, T45; 9-pc tamper proof Torx Star: T8, T10, T15, T20, T25, T27, T30, T35, T40; 9-pc Metric Hex: 1.5, 2, 2.5, 3, 4, 5, 5.5, 6, 8mm; 6-pc tamper proof Metric Hex: 2, 2.5, 3, 4, 5, 6mm; 10-pc SAE Hex: 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 3/16, 7/32, 1/4"; 6-pc tamper proof SAE Hex: 5/64, 3/32, 7/64, 1/8, 9/64, 5/32”; 4-pc Square: S0, S1, S2, S3; 4-pc Spanner: 4, 6, 8, 10; 3-pc Torq: 6, 8, 10; 4-pc Tri-Wing: 1, 2, 3, 4; 3-pc Clutch: 1, 2, 3; 3-pc Spline: 5, 6, 8mm; 1-pc Wing nut driver; 1-pc Magnetic bit holder; 1-pc 1/4" Hex to 1/4" Drive socket adaptor (1” long); 1-pc 1/4" Hex to 1/4" Drive socket adaptor (2” long); 1-pc 1/4” Drive to 1/4” Hex bit adaptor