This is an Ara rod holder. The rod angle can be adjusted to 7 different positions. The rod rest section has a built-in spring and swings. Also, the position of the mounting can be changed to adjust the forward and backward position. The butt box sizes are: Front: 59mm x 40mm Rear: 59mm x 30mm Depth: 60mm The pin holes for the butt end are 9mm holes located 20mm and 35mm from the front. By changing the mounting bolts of the box, the height can be adjusted to two levels. A rod keeper can be attached if removed. Total length: 370mm Weight: 2.8kg The anchor bolt holes are 13mm. The person in the photo holding the rod weighs 70kg. The rod used is a Daiwa Carbon Whisker Senkaku No. 100 484. The rod, reel, and rod keeper are not included. Please check the butt box size before purchasing.