One-piece isogami fishing rod tip cap, rod guide, rod protection, IM series top cover Model Numbers: 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 Rod diameter for attachment: 18mm or less. Model 20: Approximately 19x4.5cm, rod diameter 20mm Size: Lmm: 190.0, Hmm: 45.0 Rod diameter for attachment: 20mm or less. The fishing rod cap prevents tangling of the rod and is easy to use. It can protect the tip and rings of the fishing rod from damage. Fishing rod cap with a strap to secure the rod. Compact and lightweight design for easy carrying.