This particular platform is no longer available.. newer revisions are available at www.thugframes.com due to unavailability I wI'll last the site itself at the place of frame option link . This particular setip is a hybrid mix of 4 inch fuse on 5 inch arms I feel it's quite adequate even upto now.. quite the slugger.. had it for a couple of years still not broken.. u can see from the recent rebuild pics it's still rock solid.