Description • One of a comprehensive range of Premier Non-Sparking Safety Tools, suitable for daily professional use. • Manufactured from Beryllium Copper. • Die forged. • Open-end and 12-point WallDrive® ring combination. • Supplied in storage pouch. • Contents: 8, 10, 12, 13, 14, 16, 17, 19, 22, 24, 27, 30, 32mm. • Lifetime guarantee*.