Very durable. Works as it should. Good value for money. I bought this when I was upgrading my son's electric shaver motor from a 500 watt motor to a 2000 watt motor while still using the existing drive sprocket. Need a stronger circuit for extra power. Tip: Don't use the main link if you can get away with it. Get a chain sliver and you won't have a weak link. The main link provided was the only place I had trouble.