1) Recommended working load limit in tonnes stamped on each shackles
2) Average working load limit to ultimate breaking load is 5 times of WLL
3) Proof lead equals twice working load limit upto 25 tonnes over this size according to IDWR specifications ISWL x 1.22 + 20)
4) When ordering give shackle load with type of pin required
5) Test certificate from our Govt approved test house can be provided.