This is an aluminum guide adapter for 80mm extensions. (Total length: 100mm) It is lightweight and durable. It is compatible with standard 5mm base diameter fishing rod tips (Shimano, Daiwa, etc.). The thicker pipe is 30mm long, the thinner pipe is 80mm long, the overlapping part is 10mm, the total length is 100mm, and the weight is approximately 2.6g. The inner diameter of the line guide is approximately 4mm, and the height is approximately 9.5mm. Since it is handmade, there may be slight variations. ★ Even with the same 5mm base diameter, there may be slight differences in thickness depending on the manufacturer. If adjustment is necessary, please use aluminum foil, etc. (Photo 7) ※ The holes are made slightly wider and the shaft slightly thinner to make adjustments easier. ◆ If you purchase multiple aluminum guide adapters, we will discount 200 yen from the second one, so please comment in advance. Species...Smelt