This rod holder is designed for use on standard to mid-sized fishing boats where you can attach screw-clamp directly to gunwale. Use in freshwater or light saltwater fishing. When a fish hits, you simply bring your rod straight up. Rod holder adjusts to any elevation (up or down) and any angle from the boat. Made of sturdy, non-rusting alloy casting. Treated to resist saltwater. Made in USA. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Rod Holders.