RB Components 2512-K L Track Mounting Kit Everything you need to mount your RB Components 2494 100-inch L track Kit includes 10 of each: 1/4-inch-20 by 2-inch flat-head Allen bolts; 1/4-inch-20 Nyloc nuts; and 1/4-inch by 1-inch fender washers Save a trip to the hardware store!