This 4-piece Silverline Trx Spanner Set includes sizes E6 x E8, E10 x E12, E14 x E18, and E20 x E24. The spanners feature long, straight handles designed for high torque applications. They are hardened and tempered, drop-forged from chrome vanadium for durability and finished with a high-quality polish. The set comes with an ultra-strong ballistic nylon storage roll.