Visio 230cm Elasticated String Line with Metal RodsThe Visio Elevated String Line can be used in a variety of ways during practice, such as a reference for putt start line when green reading and putter face alignment at address relative to the putt start line. 230cm length The Visio Elevated String Line is a valuable edition to add to our growing range of innovative training aids. The string can be used in a variety of ways during practice, such as a reference for putt start line when green reading