This is a belay device set consisting of a Black Diamond ATC-Sport and a Simond Chamonix locking carabiner. I've used these for several seasons, so there's a used feel to them, but there are no distortions, and I believe they can still be used without any problems. I never experienced any unusual forces during use. Feel free to ask any questions! - Brand: Black Diamond - Model: ATC-Sport - Color: Purple - Type: Belay Device - Features: Locking Carabiner - Brand: Black Diamond - Model: ATC-XP - Color: Purple - Type: Belay Device - Features: Locking Carabiner Thank you for looking.