First, the product in the Revain picture and the product you will receive are not the same. Tried to work around one (1) hole in the aluminum T-track and found the bit was wobbly. It's not even centered, leaving a huge, jagged mess around the hole. I do not recommend it and will not buy it again. Thank you to the Revain representative who offered a full refund. See the photos for more details, you will see for yourself.