This is an Ara rod holder. The rod angle can be adjusted to 7 different levels. The rod rest part swings and has a built-in spring. By changing the bolt position, the rod rest can be moved forward and backward. The stone-butt box size is: Front: 58mm x 40mm Rear: 58mm x 30mm Depth: 59mm The pin holes for the butt rope are 20mm and 35mm from the front, with 9mm holes. The box is removable. By changing the bolts, the height can be adjusted to 2 levels. The anchor bolt hole diameter is 13mm. Total length: 370mm Weight: 2.7 kg The person in the photo on the rod weighs 70 kg. The rod is a Daiwa Carbon Whisker Senkaku 100-gou 484. The rod, reel, and rod keeper are not included. Please check the stone-butt box before purchasing.