This is an ara rod holder. The rod angle can be adjusted to 7 levels. The rod rest swings and has a built-in spring. The stone-butt box size is: Front: 58 x 40 mm Rear: 58 x 30 mm Depth: 59 mm The pin holes for the butt end are 9 mm holes located 20 mm and 40 mm from the front. The box can be removed. The height can be adjusted to 2 levels by changing the bolts. The anchor bolt hole diameter is 13 mm. Total length: 370 mm Weight: 2.7 kg The person in the photo weighs 70 kg. The rod is a Daiwa Carbon Whisker Senkaku 100-gou 484. The rod, reel, and rod keeper are not included.