A tank, I think five drams. The sure thing is that it fits a 2016 Hilux double-cab and can water two camels, their young, and their daughters, who are grazing on thorny plants. They come back to their watering hole twice, and the car doesn't struggle with inclines or declines. It has two holes, shown with a black circular marker. The holes are nothing; I checked them and secured them with sticks the size of matchsticks. The strap is the size of a pulpit, and it's sealed, and there's nothing wrong. The water outlet has no valve, it connects directly to the water outlet. It is guaranteed to be original, and if there's anything wrong, it can be returned. Allah is the best of witnesses. Oh Allah, at Your door, may no seeker be disappointed. Oh Allah, grant us and grant from us. Blessings to those who travel with ease and sell with ease. Only those who intend to buy should bid.