General description Sealey Siegen Flexi-Head Double End Ratchet Ring Spanner Set includes six pieces made from durable chrome vanadium steel. This flexible, double-ended ratchet spanner set features a 72-tooth ratchet ring and gear system that requires only a 5º rotation to engage the next ratchet tooth, making it ideal for use in tight or awkward spaces. Technical specifications Material: Chrome Vanadium steel Sizes: 8 x 9 mm, 10 x 11 mm, 12 x 13 mm, 14 x 15 mm, 16 x 17 mm, 18 x 19 mm Ratchet teeth: 72 Rotation required for engagement: 5º Model No.: S0806 EAN: 5024209595803 Other information