This accessory makes it easy to mount a Hi-Lift jack to your Poison Spyder RockBrawler™ Rear Bumper with Tire Carrier. The mount plate is CNC laser cut from 3/16" plate steel, with an unmistakable Spyder web design. The plate bolts to the top of the tire carrier using the supplied Grade 8 hardware. Your Hi-Lift jack attackes to the mount plate with a pair of heavy duty 1/2" carriage bolts with urethane isolator bushings. We provide both wing nuts and nylock nuts so you can choose which to use to fasten your Jack to the mount. The RockBrawler Hi-Lift Jack Mount comes bare steel so you may paint or powder coat in the color of your choice.IMPORTANT: This product is designed for use with the RockBrawler™ Rear Bumper with Tire Carrier. If you have a RockBrawler™ II Rear Bumper with Tire Carrier, you need our Rock Brawler™ II Hi-Lift Jack Mount instead.