Silverline Flexible Head Ratchet Spanner 10mm

Amazon

Hardened and tempered chrome vanadium with mirror-polished finish Chrome plated for corrosion resistance 5° ratchet action 180° pivoting head Provides easy access in tight spaces, Weight: 0.11 pounds, Manufacturer: SLTL4

Electrical World

Hardened and tempered, chrome vanadium metric spanner with mirror-polished finish. Chrome plated for rust resistance. 5° ratchet action. 180° pivoting head. Provides access to nuts and bolts in tighter spaces.