HOK 50/80The Philips HOK 50 80 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 596 mm long HOK 50 80 has a factory warranty of 600 hours. optimized spectral output short exposure times short curing times customer approved Length: 596 mm