The Hobie H-Rail with Scotty Gear-Head Adapter allows you to mount Scotty rod holders and accessories to your Hobie H-Rail. The Scotty Gear-Head lets you quickly change rod holder positions with a simple twist. You can use your favorite, fully adjustable Scotty rod holder and adjust it to any vertical or horizontal position without having to drill permanent mounting holes. It clamps to the 12-sided H-Rail without any drilling or tools needed. When the clamp is secured, the mount does not twist or slide along the rail. Loosening the clamp allows you to remove the accessory or slide it along the length of the rail. Fits the H-Rail on all 2015 and later Pro Angler 12, 14, and 17 kayaks.The Scotty 438 Gear-Head Track Adapter quickly slides into place and locks down your post mounted Scotty rod holders and accessories. Similar to the revolutionary Scotty 428 Gear-Head, this system allows you to quickly change rod holder positions with a simple twist. You can use your favorite, fully adjustable Scotty rod holder and adjust it to any vertical or horizontal position without having to drill permanent mounting holes. Designed to fit all kayak track systems, this compact product is a must for serious kayak anglers.