Tapered Opti Mainsheet Robeline&';s tapered lines feature outstanding properties such as excellent abrasion resistance, extra low stretch, and the use of top-quality polyester. A specialized line, the Opti (Optimist) mainsheet is double tapered (thinner at the ends, thicker in the center) which provides a better grip. The smaller line diameter at the ends reduces friction in blocks and sheaves.Constructed of a mix of DyneemaA(R) with a PA/PES (polyamide/polyester) yarn for high loads, low stretch, improved elongation and excellent grip.This sheet is not symmetrical, one taper is longer than the other. The long taper runs through the blocks on the boom, the shorter taper runs through the cockpit sole blocks.Compatible With:Optimist sailboat riggingFeatures: Reduced weight Better handling Technical Specifications: Color - Blue/ Silver Total Length - 23&'; (7M) Number of Sections - three (3) Section Diameters - .24"/.35"/.24" (6/9/6 mm) Section Lengths - 4.9&';/8.2&';/9.8&'; (1.5/ 2.5/3 M) *Sold as an IndividualWARNING: This product can expose you to chemicals including FORMALDEHYDE (GAS) which is known to the State of California to cause cancer. For more information go to P65Warnings.ca.gov.