These have a double 20mm ring for exceptional durability, fully enclosed release mechanism for safety and easi-ti net hooks. The release springs are adjustable but are preset to give approximately 5 degrees movement when an 80kg load is applied. These are probably the most heavy duty ring available and come with a 6mm thick backing plate.
A double 20mm solid hoop with welded net hooks for exceptional strength, 110mm x 90mm hole centres for fixing
6mm backing plate with 110mm x 90mm hole centres