Having pitched the Big Boa as the ‘Big Daddy’ of lockers we must go one further with this beefed up, super strong biner. The 30kN Boa is the – yes, and you’ve guessed it – ‘Grandaddy’’ of lockers. It has impressive gate closed strength and is robust enough to cope with the toughest of rigging scenarios. And yet, because it has an I-Beam construction, it is still impressively light. Major Axis: 30kN Minor Axis: 12kN Gate Open:9kN