Designed to relieve arm fatigue by helping the angler hold onto and keep a rod in position during a fight. Its very comfortable and secure, works best in one of Smittys Day Belts or their LRS fighting belt. Its a great option for spinning reels, can be used while trolling or chunking. The Shoulder Rest includes stainless steel Quick Release hook, includes rod strap with stainless steel D rings and hook with loop connector.