DURABLE: This 5 piece offset ring ratchet spanner set is made from chrome plated, drop forged steel for durability. IDEAL FOR CONFINED SPACES: The 25° offset design makes these spanners ideal for hard to reach nuts and bolts in confined spaces. 10 SIZES: The set includes sizes: 6mm x 8mm, 10mm x 12mm, 11mm x 13mm, 14mm x 17m and 19mm x 21mm.