Professional tool for commercial or occasional use -Manufactured from chrome vanadium steel for strength and durability -Metric size s spanners / obstruction spanners -Obstruction Bent S Spanners so ideal for access into hard to reach awkward areas -Bi-Hex 12 sided spanners so ideal for when extra grip is required -5 Pc / 10sizes Obstruction Spanner Set SET INCLUDES THE FOLLOWING SIZES - 1 x Obstruction S Spanner - 10mm and 11mm - 1 x Obstruction S Spanner - 12mm and 13mm - 1 x Obstruction S Spanner - 14mm and 15mm - 1 x Obstruction S Spanner - 16mm and 17mm - 1 x Obstruction S Spanner - 18mm and 19mm -Comes in a tool roll for easy storage and transportation