#1 CHOICE OF PRISONS & EXTREME HIGH USE COURTS For heavy use courts. Single 5/8" rim with 1/2" alloy steel bracer bars and special "T" ties. Ring will withstand over 1400 lbs. of force before bending. Net ties take over 2000 lbs. of force before breaking. The #1 choice of prisons and extreme high use courts throughout the country. Lifetime Warranty!