The picket insulated cap will fit onto star pickets even if the star picket is bent on top due to its innovative design. It can be installed in both directions on the star picket depending on fence requirements. Suitable for 40 mm poly tape, 20 mm Poly tape ,12 mm Poly tape and Poly rope. The poly tape is exposed stopping animals from tamering with the cap leaving little or no chance for the cap to be knocked off the picket. No moving parts increasing strength and longevity.