Apex Universal Joints
Apex universal joints are precisely designed to military speciation ms20271 for the aerospace industry. The joints are manufactured from alloy steel, with pre-greased needle roller bearings and an orange silicon rubber boot, that angular rotary motion suitable for gear linkages.
They have a max working angle of 15° and ultimate static torque of 1080lbs to 3000lbs, depending on size.
They are much stronger and more durable than the cheaper commercial, uncovered joints.