S8721The Superior Quartz S8721 compatible* lamp, is a high quality bulb made with the finest raw materials. It is designed to provide high actinic output and long service life. The optimized spectral output guarantees rapid curing and short exposure times with the industries best dot to dot quality. The 551 mm long S8721 has a typical lifetime of 600 hours. optimized spectral output short exposure times short curing times customer approved Length: 551 mm