Lightweight, ripstop nylon Air-Flow Tels attach to sails with waterproof adhesive locator discs. No holes required. Tels show the air flow across the sails - allowing you to trim sails for maximum performance.
Each kit includes 14 Tels and full instructions on where to apply them and how to read them. . Product : DAVIS AIR-FLOW TELS SET OF 14. Manufacturer : DAVIS INSTRUMENTS. Manufacturer Part No : 950. UPC : 011698009503- SKU: CW52131