Developed with Casper Verhaagen: Basic downhauling as well as a powerful winch function combined in one easy-to-use tool. No rope change or rope fiddling is required to operate in either mode. Say good bye to chafed hands and lost downhaul tools. Because the diameter of the Unifiber which is only 10mm, it's lighter to use than other winches. A child could easily trim a race sail alone with the Unifiber 2-In-1 Downhaul Tool.