Upgraded accessories: the material is environmentally friendly PU material, and the is made of carbon steel.[Wheels Size] Diameter Is 63mm, Wheel Width Is 18mm, Wheel Thickness + =27mm/1.06 inch, Center Internal Diameter Is 6mm/0.24 inch. See The Wheel Size In The .[Suitcase Replacement Two Conner Angle Wheels] The Luggage Suitcase Wheels Not Easy To Be Wear and Tear, Rotating Flexible, Quietness, Durable, Load-, Two Conner Angle Wheels Replacements for Luggage Case.APPLICATION: The luggage wheels replacement kit is suitable for luggage case wheels, swivel caster, roller skate wheels, etc.[Easy To Install] The New Wheels Were Easy To Install and Works Great: 1. Use A Hacksaw To Cut Off The Pole Which Connects The Original Wheels. 2. Put On The New Ones With The Included Accessories.size: 63 x 18mm, Center diameter 6mmMaterial: PU+carbon steelcolour: blackPackage Contents:2 x luggage suitcase replacement wheels2 x axles and screws2 x screw wrenches4 x carbon steel 4 x GasketOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.