This is a guided 90mm extension adapter (total length 115mm). It is lightweight and durable. It is compatible with general 5mm base diameter rod tips (Shimano, Daiwa, etc.). The thicker pipe is 35mm long, the thinner pipe is 90mm long, the overlapping part is 10mm, the total length is 115mm, and the weight is about 2.7g. 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 seems to be some difference in thickness depending on the manufacturer. If adjustment is necessary, please attach aluminum foil, etc. (The holes are made slightly wider and the shaft is made slightly thinner for easy adjustment.) ◆ If you purchase multiple sets, we will discount the shipping cost, so please comment in advance.