Used a few times. I'm selling this because I bought a DAIWA one. Quoted from Amazon ↓↓↓ A lightweight, slim joint specifically designed for Japanese smelt rod tips, allowing for free adjustment of guide direction and angle. The angle of the rod tip can be finely adjusted steplessly to suit the conditions of the day. The guide can be used either upwards or downwards, which is convenient when bites are difficult to detect or when you want to speed up the sinking speed of the rig. It fits rod tips with a diameter of 5mm and is compatible with various electric Japanese smelt reels. Set the rod tip freely for comfortable fishing.