Used Carter # LGL100A Laser Guide Line Light Turns on and works. These came from a company that had a lot of rip saws and had a few extra lights on a shelf. The serial number on the light and the one written on the box do not match. The power indicator light on the back flickers but the laser light seems ok. I do not know much about these sold as is. [Please Look at all the pictures they are part of the description] This is from a now closed factory that kept spare parts in stock for their equipment boxes / parts may have some shelf wear, dust / dirt. [B1-F1-R6-S1-3]