The Sun System© Reflector Level is for use with all Sun System© brand reflectors and lighting fixtures. Use this triangle-shaped two-way level for easy, consistent, level hanging of your reflector. Easily attaches to any steel reflector or fixture with an integrated magnet. Another great Sun System© product for a better growing experience. Several of the US made Sun System© reflectors have this level included in the box as a complimentary accessory. Actual size is 2-1/4 in by 1-3/4 in.