Manufactured from Beryllium Copper. Die forged. Open-end and 12-point WallDrive® ring combination. Supplied in storage pouch.13pc Combination Spanner Set - Non-Sparking• 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*.• Model No. NS001Model No: NS001:Brand: Premier:Contents: 8PTDSEANS001