Circlip - safety clip for Hormann & Garador Door Arm 

This fits either end of Hormann and later Garador G3 canopy door arms 

Approx size 22mm x 18mm

Slot on back with Approx 8mm 

Hole size at widest point Approx 10mm

Fits all Hormann canopy garage doors and Garador canopy doors post 2003

This is a GENUINE Hormann part and usually have a "shiny" plated finish.