Smoke Detector Alarm Hollow Wall Mini Wing Anchor Nylon Ceiling Mounting Product Description This Nylon Hollow Wall Mini Wing Anchor is a lightweight ceiling-mount fastening solution specifically designed for smoke detectors, carbon monoxide alarms, security sensors, motion detectors, and small ceiling-mounted safety devices on plasterboard and gypsum board surfaces. Each anchor includes a 5mm diameter nylon mini expanding wing plug pre-matched with an M3.5 x 30mm zinc-plated