This is a high-quality laser collimator that I purchased for a never-received reflector. The seller (a well-known on-line merchant) didn't respond to my requests to return the piece, so here it is. Should mention that I foolishly opened the box to look at it - a very pretty blue anodized aluminum housing, quite rugged. My cost was $89.95. Asking $70.00, including CONUS shipping.