Features: 1) Uses high intension and high isolation wire; iron core piled close up; provides long service life and super quiet 2) The junction is made of anti-hire nylon; bottom base made of 1mm high quality rolled steel 3) Dousing white paint 4) Specifications: a) SB-09W-5/7/9/11W b) SB-13W-13W c) SB-15W-15W