The Sun SystemŽ Reflector Level is for use with all Sun SystemŽ brand reflectors and lighting fixtures. Use this triangle shape 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 SystemŽ product for a better growing experience. Several of the US made Sun SystemŽ reflectors have this level included in the box as a complimentary accessory. Actual size is 2-1/4 in by 1-3/4 in.