Amarine-made Stainless Tournament Style Clamp on Fishing Rod Holder For Rails 7/8"-1" This product is a 100% brand new Amarine-made product Can be mounted to vertical or horizontal rails - Adjustable for rails 21mm (7/8") to 25mm (1") diam Rubber insert to protect your fishing rod from any wear against the stainless surface Rod holder can be adjusted to 32 different angles when mounted;Easy to install, mounting bracket includes bolts (allen key not included). Stopper slot built into the base of the rod holder to located the rod butt into position;