OSO MIGHTY AXLE COLLARS The lightweight OSO Mighty Axle Collars are quality-made, economically priced, and specifically designed for specialty barbells that use 1.5" pipe with a nominal outside diameter of 1.9". This includes compatibility with the Rogue Axle,TB-2 Trap Bar, and Log Bar, as well as the bars of the Rhino Belt Squat, RH-2 Rogue Reverse Hyper, and Rogue Donkey. Manufactured in Columbus, Ohio, all OSO Mighty Axle Collars feature the same aircraft-grade aluminum construction, rubberized interior lining, and locking clamp mechanism as our OSO Mighty Collars. The key differences, besides the sizing, are the notched flanges and red anodized finish—making it easy to identify the Mighty Axle Collars as your grab-and-go option for specialty bar training. Approved for the new Army Combat Fitness Test (ACFT) This product has been officially approved for use with the United States Army’s Combat Fitness Test, a 6-event readiness assessment that’s replacing the previous 3-event Army Physical Fitness Test in 2020. The grueling new ACFT is neutral across all genders and age groups, and includes a strength deadlift, standing power throw, hand-release push-ups, sprint/drag/carry, leg tuck, and a 2-mile run. Compatible Rogue bars and strength equipment include: The Rogue Axle Stubby Axle MG-1 2.0 MG-2 MG-3 Multi-Grip Bars Rogue TB-2 Trap Bar LB-1 10" Log Bar LB-2 8" Log Bar Branch & Beam Rogue Farmers Walk Handles Rogue RH-2 Reverse Hyper Machine
