C7 and C9 Christmas light strings and spools are great for indoor or outdoor Christmas displays where larger bulbs are desired. For smaller projects, choose precut strings ranging from 25 to 150. For larger projects, choose 1000 spools that allow you to cut custom lengths for your roofline, outline your yard, or for any project you have in mind. Strings and spools work with both LED and traditional incandescent C7 or C9 light bulbs, or any bulbs with E12 or E17 bases. Green and white wire are available to best match your application. Use with commercial light clips or lawn stakes to finish projects with a professionals touch.