The product is a set of two 16-inch bike cycle inner tubes made of black rubber by the brand Laxzo. The tubes have a Schrader valve and a length of 40 mm. Designed for bicycles with wheel sizes of 16 inches and a tube size of 1.2-1.35, these inner tubes are ideal for cyclists looking for durable and reliable replacement parts for their bicycles. Made in China, this set includes two inner tubes, ensuring that riders have a spare tube on hand for any unexpected punctures during their cycling adventures.