White strobe light only, to be added to existing Type E "tear drop" navigation light. Fits most Grimes model E lights and 'Whelen WIZ85 lights. Requires only the drilling of a 1/4" dia. hole in the position light base. A650 strobes provide economical & practical means to update a lighting system on both homebuilts and certificated aircraft. Wt. 0.2 lb.