Hard Anchor Shackles are not a safe choice for connecting ropes and straps to one another. This is due to the energy the Shackles can carry if the rigging breaks. AEV’s Soft Shackles provide a much safer alternative.
Minimum Breaking Strength (MBS) is the minimum force necessary to cause a recovery device to break or fail. Working Load Limit (WLL) is the recommended maximum force a recovery device is intended to safely support, when the force is applied in-line and through the centerline of the device. The WLL is calculated by dividing the Minimum Breaking Strength (MBS) by a safety factor that is generally around 4-to-1. For example, the AEV Snatch Block has an MBS of 52,000 LBS, so when divided by a safety factory of 4-to-1, the WLL becomes 13,000 LBS.