Costco Sale: Coast LED Headlamps 2-Pk $19.99 by Rhonda July 16, 2020 *UPDATE* 7/23/17. The headlamp is hard hat compatible and 8 helmet clips are included along with 6 Duracell AAA Alkaline batteries. Costco has the Coast LED Headlamps 2-Pack on sale for… 0 FacebookTwitterPinterestEmail