The DMM 12mm Boa is a great steel carabiner with a wide variety of applications. Whether using in a commercial work environment, outdoor adventure parks or outdoor education centres - this is a steel karabiner capable of many jobs. It has all the versatility of its alloy sibling, but has a rated strength of 40kN. It can be used for many applications where a large gate opening or high internal volume are required. The smooth rounded internal form is very useful when rotating the karabiner through attachment eyes, and the basket curves nicely to allow central hanging of loaded components.