The Flip Flop Trunk Conversion Kit is a custom modification that gives your car that trick look where ever you go. Great for showing off sound systems, hydraulics or air suspension in your trunk! Installation is a snap! Milled from heavy duty aluminum that resists rust and can be polished to a high luster. Aluminum body has pre-drilled, countersunk holes to clear trunk bolts. Also includes 2 spring loaded safety pins. Comes with detailed instructions. Universal kit designed for square shaft trunk arms. This item is covered by one or more US & International Patents, and pending patents. US patent #7162775.