General description Our wheelbarrow inner tubes are designed for heavy-duty use, making them perfect for moving loads with wheelbarrows, sack trucks, hand trucks, trolleys, carts, and dollies, even on uneven surfaces. Made from durable, abrasion-resistant rubber, these replacement inner tubes feature a metal valve and are easy to inflate. Technical specifications Colour: Black Material: Rubber Suitable for air wheelbarrow sizes: 3.50-8/16x4/4.00-8/400x100 Outer diameter: 33 cm Inner diameter: 20 cm Width: 7 cm Each with a straight TR13 valve Delivery includes 2 inner tubes Other information