Description: Type: Boat Trailer Roller Easy to Use: Rolling tool can roll extremely smoothly Portable: Lightweight and compact, portable and easy to carry. Size: inner hole 2.2cm/0.87inch, long 20.3cm/7.99inch, diameter 8.9cm/3.50inch  Application: suitable for the transportation of large cargo in factories, docks, ports, warehouses and other areas Specification: Material: PP material Package Includes: 1 Piece Boat Trailer Roller Note: Please allow slightly errors due to manual measurement and different monitors.