Wiha (WIHAA) 76096 Security Hex In Power Blade 10 Pc. Set Security hex inch sizes: 5/64 3/32 7/6 1/8 9/64 5/32 3/16 7/32 1/4 Premium 1/4" drive blades are 90mm/3.5" long Made of Wiha premium cvm tool steel that is Hardened and tempered for longest performance Precision CNC machined for exact fit Professional quality made by Wiha