Manufactured from Chrome Vanadium steel, hardened and tempered with a fully polished micro satin finish. Innovative ring design allows four different sizes on one spanner. 100-Tooth ratchet rings require only 3.6º rotation to pick up the next tooth. Ideal for applications where space is limited. Features & Benefits:Manufactured from Chrome Vanadium steel, hardened and tempered with a fully polished micro satin finish.Innovative ring design allows four different sizes on one spanner.100-Tooth ratchet rings require only 3.69º rotation to pick up the next tooth, ideal for applications where space is limited.Size Coverage: 10 x 13, 17 x 19mm.Lifetime guarantee*.Model No. AK63947 Specifications: Model No AK63947 Brand: Premier Platinum Length: 235mm Nett Weight: 0.27kg