APCO AIR EXTREME GATE LOCK CARABINER
The Air Extreme carabiner is made of Zicral. It has been tested to withstand 2.5 tons before bending. After prolonged use before bending, it is still valid for at least 1,700-1,800 kg.

Precise tolerance between door and latch
Avoids periodic bending cycles under repeated loads.
No loss of strength after prolonged use.
Made of hot-forged aircraft-quality 7075 aluminum alloy.
Individually tested