Description: Standard thread to screw on to your rod pod. These grippers will firmly grip your rod even it get wet. Suits virtually all fishing rods. Ideal for carp, course, match fishing etc. Rod rest heads with M3/8 screw thread, which fit virtually any rod. Useful butt rest for anglers. Specification: Material: Nylon Large size opening: approx. 48mm/1.89inch Total length: approx. 7.2cm/2.83inch Package Includes: 4 Pieces Fishing Rod Rest Butt