Truck Cap Topper Lock Rod Bars Used with most all truck cap manufactures. The 2 Point Heavy Duty Lock Bar System are used on fiberglass and aluminum truck cap rear doors. Generally used with single t-handle locks which are mounted in the center of the rear door. Features: Multiple Lengths: 50-1/2", 54-3/8", 60-3/4", 61-3/4", 65", 66", 72" Bars come with rod guides and cam. Used with T-handles that have a 5/16" square shaft. Can be used on rear or side doors on truck tops or RV compartments All locking bars are measured from end to end in a fully extended locked position(open positions measure 1-1/4" shorter) Bars can be cut to match applications. (no returns accepted for cut bars)