ok so Ive been running TSS strong boards for a few seasons now and they have been awesome! they stiffen up the tunnel, and provide great traction. the bars are spaced good, and there is zero snow build up, they don't even ice up like some of the plastic traction I have used before. using self tap screws is easy, and even better they come pre mounted so you only have to mount the board, and not attach the traction. These have been awesome, an they work great.