EyeLine Golf Edge Putting Plane Rail (70-degrees) 70 degrees is the lie angle of most putters. Your putter will travel like it was built to - when you bring the putter off the ground it will travel slightly inside the line, and return squarely to the ball with ease Professional grade - made of USA steel with a powder coat finish Markings on the face of the rail - check your putter's distance back and through and shaft rotation Rail may be used with or without the edge mirror Non-skid backing makes it perfect for indoor or outdoor practice See, hear and feel a stroke you can trust 70 is the lie angle of most putters. Your putter will travel like it was built to - slightly inside the line and return squarely to the ball with ease. Check your putter's distance with the markings on the rail Non-skid backing is great for use indoors or outdoors 70 Rail only - no mirror included