Review on POWERTEC 4 Inch 20 2 Inch QTB1005 T Slot: A Revolutionary, High-Quality Power Tool Accessory! by Carlos King

T-rails are fine, but they don't seem to slide as easily as the ones that come with the rails. I downgraded my rating from 5 to 3 stars after using T-Bolts for a day. I had to remove them to smooth the bottom edges on my bench grinder and also grind them on a spoked wheel. Now they glide well. They clung to the railing all day until I cleaned them.