The Sailtec Integral Backstay Adjusters # -10CUSTOM (J-109) are designed to enhance the performance of your sailing experience. Known for combining a hydraulic cylinder with a small pump, this adjuster simplifies backstay tension adjustments while ensuring a secure, snag-free operation. Ideal for J/109 boats, it offers an efficient and reliable solution for dedicated sailors. Benefits Low profile hydraulic pressure gauge for easy reading Compact pump lever with 316 stainless steel handle Durable all-weather handgrip Proven design with nearly 30 years of improvements Crafted with high-quality 316 stainless steel, these hydraulic backstay adjusters boast a refined look and robust performance. The adjusters are tailored for J/109 sailboats, ensuring perfect compatibility and ease of installation. The compact design and top-mounted gauge provide both functionality and aesthetics for sailing gear enthusiasts. Our Part # STC10J109C | Mfr. Part # -10CUSTOM (J-109)