Rod Rest Description Improved Butt Loks feature a hard plastic skeleton with a soft by hardwearing rubber over mould. When sized correctly to the rod, these lock in securely the butt of your rod. They are constructed from a robust rubber that grips to the butt of your rod with impressive strength. This grip is greater than most other models available as despite their small size the Fox Butt Grips are actually in contact with more of the butt’s surface area than most. As mentioned previously they are very small, which when coupled with their minimalist styling makes them every tackle tarts dream back rest! There are four models available, Small for standard abbreviated handles, Medium for skinny cork/duplon Large for full Duplon and cork handles Duo swap beteen cork and Duplon