The standard safety bow shackles comes in a wide array of different weights and sizes. Starting at a range between 0,36 and 1,79 kgs we have the smallest safety bow shackles. The medium sized safety bow shackle can weight between 2,28 and 8,62 kgs. While the largest ones, the big sizes of safety bow shackles can weight anything between 15,4 and 153 kgs, the ones used in the large mooring operations.