Siegen s01053 box spanner set 9 piece siegen tools s01053 p this 9 piece box spanner set from siegen is manufactured from carbon steel and zinc plated for corrosion protection eight spanners covering 16 sizes plus a tommy bar p p full contents 6 x 7 8 x 9 10 x 11 12 x 13 14 x 15 16 x 17 18 x 19 20 x 22mm tommy bar p siegen s01053 box spanner set 9pc