Feature●Package Includes:6 adjustable hoverboard replacement straps A rubber wheel, , a screw nut and a washer. Hoverboard attachment and hoverboard are not included.●Scope of application:4 Quiet Rubber Wheel Replacement for Hoverboard kart Attachment (Single Bolt Type)●Quiet Wheel: The screw diameter is 1.2cm. This wheel is made from soft rubber. It will not produce noise when running on the floor at home and road.Shockproof, quiet, smooth and durable.Description