532nm Focusable Green Generator Projector Line Module for Sawmill Woodworks Swamp Haunted House 18mm Features: Well made, and stable performance. Long time working without stop if in suitable environment temperature (15-35?). New Design of laser body, aluminum case with graves, with a rubber tail for cable protection and anti-dust function. Housing made of Aluminum, light and strong. 532nm green laser line which is beautiful for haunted housing light effects creating, better effect when smoke is used.