A manufacturer of strain relief bushing and other wire accessories. The term is often used generically for the fitting on many lighting fixtures. Website. The fittings can be especially frustrating to use without the proper Heyco pliers, which are expensive and single-purpose, but necessary nonetheless.
See the thread https://www.controlbooth.com/threads/heyco-strain-reliefs.8012/ for discussion.
See the thread https://www.controlbooth.com/threads/heyco-strain-reliefs.8012/ for discussion.