Fishing Rod Tip Cap for 1-Piece Surf Casting Rods, Rod Guide Protection, IM Series Top Cover Model Number: Model 18 and Model 20 are in stock. Please specify your desired model number in the comments. Model 18: Approximately 18x4.3cm, Rod Diameter 18mm Size: Lmm: 180.0, Hmm: 43.0 Applicable Rod Diameter: 18mm or less. Model 20: Approximately 19x4.5cm, Rod Diameter 20mm Size: Lmm: 190.0, Hmm: 45.0 Applicable Rod Diameter: 20mm or less. The fishing rod cap prevents tangling and is easy to use. It can protect the tip and rings of your fishing rod from damage. Fishing rod cap with a strap to secure the rod. Compact and lightweight design for easy portability.