Sold In 25, 50, 75 or 100 Lights Check Pictures For Base Measurement Diagram Warm White Incandescent 0.425 Watt 2.5 Volt Tabbed Green Base Style AT Glass Bulbs One Or More Can Burn Out And The Others Stay Lit 25x 2.5 Volt 0.425 watt 0.17 Amp replacement glass incandescent Clear mini bulbs indoor/outdoor Christmas tree lights. New bulbs with a green style AT base, please see pictures for a measurement diagram. Can be removed from the base to be used with different color bases and other base styles This is the style where one or more can burn out and the others stay lit.Style AT base measurements are .44" long overall, .36" inserted into the socket, and .25" inserted diameter with a locking tab. Thanks