10 x 3.50 / 4.00 Tire Inner Tube - TR4 - [0350-0314] PARTS UNLIMITED - is currently on backorder. You may still purchase now though and we'll ship as soon as more become available.
Parts Unlimited Inner Tube - 3.50/4.00-10 - TR4 - [0350-0314]
Details:
A diverse range of sizes allows one-stop shopping for your tube needs