https://www.goodtimepartyrentals.com/items-24/helium-tank-h10-150-(fills-approx.-150---10%22-balloons) 2023-01-06 https://www.goodtimepartyrentals.com/items-24/helium-tank-h10-230-(fills-approx.-230-10%22-balloons) 2023-01-06 https://www.goodtimepartyrentals.com/items-24/larger-sizes-available.-please-inquire. 2023-01-06