Its pros: Soft rubber, excellent rulitsya. Withstood 5 seasons) never failed Its cons: The disadvantage for 5 years of use revealed one - noisy! Well, a minus: pebbles often get stuck in rubber) when you move, you “chik” and twitch that you caught a self-tapping screw ( The self-tapping screw really caught, but for the 5th season of use (
I hope these photos help to give a fuller picture of my experience.