Our FreeArm Muscle clip is thick, strong and has a locking nut where the clip connects to the bendable arm. This helps the clip not pop off even when holding a heavier feedbag! The FreeArm Muscle clip also has two hooks for feeds and flushes, or to hang two bags at once if needed! Included with each FreeArm Muscle purchase, but can also be purchased separately here. All prices are in USD.