Manufactured from hardened and tempered high grade Chrome Vanadium steel. Fully polished black chrome finish for resistance to corrosion. Includes knurled ring for extra grip with oily fingers. Supplied on socket rail. Features & Benefits:Manufactured from hardened and tempered high grade Chrome Vanadium steel.Fully polished black chrome finish for resistance to corrosion.Includes knurled ring for extra grip with oily fingers.Contents: 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10, 11, 12, 13, 14mm.Supplied on socket rail.Lifetime guarantee*.Model No. AK7991 Specifications: Model No AK7991 Brand: Premier Black Configuration: 6-point Socket Contents: 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10, 11, 12, 13, 14mm, Socket Rail Depth: Deep Nett Weight: 0.46kg Qty: 13pc Type: 1/4"Sq Drive - Metric