Eleiko 88kg XF SetFunctional Training Set XF Bars and Bumpers ppen Collars Everything you need for multi purpose hybrid strength training, especially workouts that include high volume lifting. The sets feature Eleikos XF range of bars and bumper plates along with the black change plates and Oppen Collars, they are ideal for functional fitness in a facility, garage or home gym. XF Bars: Combine needle bearings and bronze bushings to ensure optimal spin for explosive