Bars Exercise & Fitness, Sports & Fitness, Sports & Outdoors, Strength Training Equipment, USA Sports 14 Inch Long Threaded Dumbbell Weight Bars with Collars – For Use with Standard Weight Plates – 1 Pair Review by BrokenBoy June 22, 2018 No Comments Perform a variety of exercises with the threaded dumbbell bars. Comes with 2 bars and 4 collars.