The winning history of Tuff Luff is second to none. Light, durable and proven over hundreds of thousands of miles, you can rely on Tuff Luff to help you finish first. Twin grooved foils allow for easy and fast sail changes keeping you in front. Available in standard Tuff Luff models for sizes up to 3/4" (20mm) -76 rod. Schaefer's new Tuff Luff Aero is now available in two sizes for -17 and -25 covering most boats to 50'.