How to distinguish the quality of the shackle?

1、Check the material label: 

High quality shackles will clearly indicate the material (such as alloy steel, stainless steel) and certification standards (such as CE, WLL)

2、Check surface treatment:

There should be no cracks, burrs, or obvious casting defects

3、Test thread fit:

The screw pin should be able to smoothly screw in and out without any jamming

4、Check the certification mark:

 Legitimate products will have the manufacturer's logo, load-bearing grade, and other steel seals