SAFE TEC DUCK-R L backup device. I am selling this as I have no opportunity to use it. I have used it about 10 times for testing. It was stored in a gear bag. Fall arrest device. Supports a load of two people during rescue. ■Weight: 260g ■Size: Approximately 10cm x 7cm x 4cm ■EN 12841 Type A (Fall arrest for safety lines) ■Compatible rope diameter: 10.5mm to 11mm (using EN1891:1998 Type A)