Siegen s01043 flexible crow s foot open end spanner set 10pc 3 8 sq drive siegen tools s01043 p this 10 piece spanner set from siegen features chrome vanadium flexible head crow s foot spanners suitable for use with extension bars and ratchet wrenches ideal for applications where access is limited and various angles are needed heat treated hardened and chrome plated with a fully polished finish br br sizes 10 11 12 13 14 15 16 17 18 19mm p siegen s01043 flexible crow s fo