Product information "Rocker Panels"
Poison Spyder JK Body Armor is recommended equipment for any JK  venturing into off road situations where body damage is eminent. JK Body  Armor protects the thin factory sheetmetal with rugged, precision-fit  3/16" plate steel or aluminum. Used by itself, JK Body Armor hugs the  Jeep's body contours to provide protection with no loss of ground  clearance. Used with the factory Rubicon rocker rails, the JK Body Armor  helps prevent trail damage that can be caused by rocks pushing the  factory rocker rails up into the body. And used with Poison Spyder's JK  Rocker Knockers™, the JK Body Armor provides one more line of defense  for your JK, in the most complete, strongest, best looking package of  rocker panel protection gear available for the JK.
JK Body Armor  is manufactured from  3/16" 6061-T6 aluminum plate.  Aluminum is  recommended where Rocker Knockers, the stock Rubicon rocker rails or  other rocker panel protection will also be used. The aluminum pieces are  much lighter weight, yet still provide excellent load distribution  characteristics when used as a secondary barrier in conjunction with  external rocker rails. Aluminum parts are CNC-laser cut and precision  brake-formed for a precise fit to the unique contours of the JK body.  Bolt holes are countersunk, and stainless steel flat head cap screws are  supplied for a clean, flush-surface installation. Drilling of the body  is required for installation.
JK Body Armor is shipped in bare, unfinished metal. You will need to paint or powder coat prior to final installation.
NOTE:  Installation of this product includes drilling and installing 1/4-20  "nut-serts". We provide a rudimentary "tool" in the kit for installing  the nut-serts, however it can be tedious and frustrating to use. If you  are going to be installing several products that require the use of  nut-serts, you may find it worth the expense to purchase a Professional  Nut-Sert Installation Tool. Also, the drill size required for this,  25/64"
Poison Spyder offers a precisely-cut rubber liner to  install between the Body Armor and the factory sheetmetal. Although the  Body Armor can be mounted without the liner, this additional component  adds protection from debris collecting between the Body Armor while  protecting your Jeep's factory sheetmetal and paint. The rubber liner is  cut to match the lines of the Body Armor perfectly - no cutting or  trimming is required. Liners are sold separately and do not  automatically come with the Body Armor kits.