Clock key size 8 standard for Hermle movements. Brass with steel plated wing.

Description

This new single end #8 key is a replacement for a lost or worn clock key. It fits most all the Hermle movements with a 4mm square winding shaft made in perhaps the last 60 years. It also will fit most grandfather clock movements also though usually a crank is used there.  Made with a solid brass shaft and a brass plated steel wing for long lasting use.