EyeLine Golf Edge Putting Plane Rail (90-degrees) See, hear and feel a stroke you can trust If you like to bring the putter straight back and through to your target then the 90 Edge Putting Plane Rail is the ideal tool to train the path and shape of your stroke Check your putter's distance with the markings on the rail Non-skid backing is great for use indoors or outdoors 90 Rail only - no mirror included