This is a guided 60mm extension adapter (total length 80mm). It is lightweight and durable. It is compatible with general 5mm base diameter rod tips (Shimano, Daiwa, etc.). The thicker pipe is 30mm long, the thinner pipe is 60mm long, the overlapping part is 10mm, the total length is 80mm, and the weight is about 2g. The inner diameter of the line guide is about 4mm, and the height is about 7mm. 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. ◇ If adjustment is necessary, please attach aluminum foil, etc. (Photo 6). ◆ If you purchase multiple sets, we will discount the shipping cost, so please comment in advance.