First point, delivery time, barely a week for a business from across the Channel, highly reactive, bravo! Second point, particularly effective product! Caution, do not hesitate to use two sheets of 500 flagship, despite that following this first phase optics becomes frosted white, do not panic, this is normal. The work is done in four main phases, at the end of these four phases cleaning with soap or shampoo to remove any impurities left after a cleaning rag in advance and maximize the transparency of the optics. It was a first for me, the end result is almost perfect (I know still do a little better I think if this were to be a next time), I had a pronounced interference on one or less on the other , noted for guidance on my last technical control, and I feel I have gained a little in lighting efficiency. The only problem I had was one of my drill driver who laché batteries, so I was obliged to wait to attack the second perspective, the time that my only recharge battery! Total Time Spent just over two hours, with about 1:30 mode using "grinder." Just a reminder, the kit is for "a pair" optical, do not try to "attack" another, there just necessary for a pair.
