... Rim : steel & plastic 3 Size : 16"x4.00-8 4.00-8 rubber wheel : Strengh: 1 High rubber content2 medium ... foam tyre(6x2,2.50-4,3.00-4,3.50-6,3.50-4,3.50-5,4.00-6,13"x3. ... 25-8,13"x3.00-8,13"x5.00-6,4.80/4.00-8,etc.)pneumatic wheel(6"x2",8"x2. ... 50-4,200x50,10"x280/250-4,10"x3.50-4,13"x3.50-6,13"x3 ... 8,18"x6.50-8,etc)3.Rim: steel & plastic 4.Ply Rating: 2pr, 4pr, 6pr etc. 5. Bearing: stainless ...