These are tough, extremely well made.  Forget the bulky foam handles on other units that snag or rot after a few years use, and our do not collapse with the built in core support.  These are the best built and most comfortable handle you will ever find to use to pull oneself into the Jeep®, Toyota ® Nissan®;  or just about anything with an overhead roll bar or roof rack tube.   For other applications and custom made roll bars,  measure the outside diameter of the bar you wish to cover and take into consideration any padding that will remain in place.  2007 and newer Jeep Wrangler: JK 2 or 4 door requires 2 of the RBH3's for the front seats and 2 of the Bolt In style grips for the back seat riders. 
2003 - 2006 Wranglers require RBH3 for the fronts seats and RBH4 for the back seating areas. 
2002 and older require RBH2 for the fronts seats and either RBH2 or RBH3 for the back seating areas depending on whether padding is still in place.
Toyota FJ Cruiser requires RBH1.5 and Nissan Xterra requires RBH2 for OEM roof racks.
Contact us if you have any questions please, we want to make sure you get the best possible handles for your rig!