The heavy duty version of the 25kN Boa looks very similar, but is hot forged from 14mm rather than 12mm bar to give it the 30kN major axis rating required for rescue loads. The massive curved basket copes with even the busiest rigging set up and still allows devices to settle comfortably. The impressive size and ergonomics ensure it can be operated by even the largest hands with the chunkiest of gloves.