This is an extension part specifically for the Twin Pilz Fork. By replacing the standard poles with the two-fork frame, the space inside the shelter can be used effectively. ■Brand: OGAWA ■Product Name: Twin Pilz Fork 2-Fork Frame ■Product Model Number: 3045 ■Weight: Approximately 1.6kg ■Material: Aluminum alloy Φ22mm It has been used several times, so there is some wear and tear, but there are no problems.