I think it's for baitcasting reels, but I don't remember well since I haven't used it. Size: Width 13cm x Height 15cm x Depth 2cm Shipping will be via Yu-Packet Post Mini, so please be aware that the packaging will be a bit tight. Fishing gear list here↓ #釣り具一覧 【Notes】 1. Please allow for errors in dimensions and weight. 2. The coin shown in the photo is not for sale. 3. Please understand that the color of the photo may differ from the actual product due to the shooting location, equipment, and lighting, and that there may be overlooked scratches or dirt. 4. To keep the selling price down, we may use used boxes, recycled materials, newspapers, compression bags, etc. for packaging, so please understand this as well. 5. We are looking for bids only from those who understand that this is a used item or a natural product, including the above. Please refrain from bidding if you are looking for perfection or are overly sensitive.