Lamp or single mount badge to badge bar adapter - will fit only 3/4" (19mm) dia. badge bars. Add a lamp or single mount badge to your badge bar with one of these clamp on adapters. Heavy chrome plate and split apart construction make this an ideal clamp to use on bars were you can not get access from an end. This item was a Desmo design back in the 60s. Shown fitted to a badge bar which is not included. Hole for lamp or badge is 15.60mm (0.61") diameter.