Review on Red Laser Level Target Card Plate With Firecore Technology - FLT20R For Improved Accuracy by Govindarajan Diepenbrock

I bought two of the Firecore Target cards for a large suspended ceiling job. I did notice that the reflectivity of the two was slightly different but both worked well with the Bosch laser level. They each have two rare earth magnets to attach them to the ceiling grid while leveling. I would have preferred stronger magnets as they fell off rather easily while making adjustments and tying off suspension wires. The good thing was that despite many falls from 10 feet to concrete floors no damage seemed to occur at all except once in a while a magnet would get knocked out of it's pocket but was easily put back in.