Keywords: Power-type handle knob, Shimano Inc., Spinning reel size 4000 and up, Custom parts, Genuine product Condition: Please judge and confirm the size and condition in the photos. Please make your own judgment based on the photos before purchasing. I'm sorry, I'm not sure if this is from Yumeya or a part from Shimano's top-of-the-line or high-end models, but it was expensive when I bought it. I only stored it after purchase and haven't used it myself. If you know about these and want it, please buy it. In terms of size, it seems to fit Shimano spinning reels in the 4000-5000 size range. If you have any questions or requests, please comment before purchasing.