1) Item no.: XH6501 2) Diameter: 165 - 168mm 3) Width: 33mm 4) Hardness: 50 - 60 degrees 5) Roller h 1) Item no.: XH65012) Diameter: 165 - 168mm3) Width: 33mm4) Hardness: 50 - 60 degrees5) Roller hole: 6.1mmmany style and colours, suitable for wheel collocation of different kinds of vehiclessuch as baby stroller, luggage barrow, shopping cart, golf vehicle, toy car,etc thin wheel