Large 50mm eye diameter allows most rated shackles and hooks to pass through. Can be retro-fitted to several Armorgard products, including some TuffBank models, CuttingStation, and more. Solid 8mm steel construction for ultimate strength. The kit fits approved products using 2x M10 coach bolts per lifting eye. The set of 4 lifting eyes has been proof-load tested for weights up to 3000kg.