100-Pc 25mm All Purpose Bit Set manufactured from chrome vanadium and Set includes: Slotted: 3-7mm PH0 PZ0 Hex (metric): 1.5-8mm Hex (imperial): 1/16"-1/4" Hex Tamperproof: 2-6mm + 5/64"-5/32" Star: T8-T45 Star Tamperproof: T8-T45 Tri Wing: 1-4 Square: 0-4 Spanner: 4-10 Star: M5 M6 M8 Spline: 6- 10 and Butterfly; 1- 3 Also has 2pc x 1/4" drive socket adaptors 1/4" drive socket extension cup hook bit + 60mm magnetic bit holder.