Sailtec cylinders are designed to pull (typically), push, or both with common applications such as backstays, forestays, outhauls, and travelers. High-strength aluminum and T-316 stainless alloys and state-of-the-art manufacturing techniques result in precision, zero-leak cylinders with even seal loads and minimal seal wear. The upper jaw, lower jaw, and cylinder are made of high-strength, heat-treated aluminum alloy, precision-honed, and polished for appearance.