- Chrome vanadium steel for durability
- 8 piece set - Sizes: T9, T10, T15, T20, T25, T27, T30, T40
- Lifetime guarantee
The Trojan Ball End Imperial Allen Key Set is an everyday tool that is used as a driver for screws, bolts, and other fasteners designed to fit the tool. Ideal for home improvement, D.I.Y. projects and an essential tool for general use.