This is a 70mm extension adapter with a guide, made of aluminum. (Total length 90mm) It is lightweight and durable. It is compatible with standard 5mm base diameter rod tips (Shimano, Daiwa, etc.). The thicker pipe is 30mm long, the thinner pipe is 70mm long, the overlapping part is 10mm, the total length is 90mm, and the weight is approximately 2.4g. The inner diameter of the line guide is approximately 4mm, and the height is approximately 8mm. 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, but it is tapered to accommodate a wide range of sizes. ◇ If adjustment is needed, please use aluminum foil, etc. (Photo 7) ◆ If you purchase multiple sets, we will discount the shipping cost, so please comment in advance.