Wheeleze II Wheel Bar Wheels-4" diameter, 1/2" Bolt x 1 1/4" wide, Wheeleze II have a tensile strength in excess of 10,500 psi and has no compression but retains the additives that allow the wheel to live at extreme centripetal force and it gets another additive that allows the wheel to have an abrasion index of over 550 on a base index of 100 - - - in plain language, you can’t wear them out by running on them at 200 mph for the whole quarter with lots of down force. Wheeleze II are made specifically for three applications: 1. Front Wheel Drive cars apable of trap speeds of greater than 200mph with down force. 2. Nitromethane and methanol dragsters and F/C’s that get into a potential blow over. In these applications the doubled strength of the wheel should allow the car to ‘stay on the wheel’ as opposed to the wheel either being overwhelmed or bending. 3. Pure wheel standing exhibition cars that run the whole quarter mile on the wheelie bar wheels. Two Wheels