Kuryakyn Precision Spark Plug Covers For Harley Touring Features Pure perfection when it comes to filling the void around the base of the plugs, head bolts, and surrounding area Features a stunning stepped design crafted from premium aluminum Fills the gap between the upper cylinders for a clean custom appearance Durable die-cast aluminum construction with premium gloss black finish Easy bolt-on installation and removal for required maintenance work Styled to coordinate with the entire Precision line of engine covers for the Milwaukee-Eight