Dual Row Flying 90° Corner Block Wt. 17 lbs. Flying 90™s attach directly to the strand eliminating the need for pole brackets. Four eyelets with rigging hooks are welded to our rugged one-piece frame. The inner two hooks carry the load while the outer two hooks hold the block parallel to the strand. The 17 radius safely guides coaxial and fiber optic cables through the block. Nylon rollers.