Replacement 55.5mm Dust Hub Cap Grease Cover for Alko Trailer Drums Pack Size:Single Hub Cap Knuckle head is finished in

Knuckle head is finished in phosphate black to prevent corrosion

Professional flap wheel for commercial or occasional use

Auto blade return

Comes all on a spool for easy rewind / use as well as storage to prevent the item form going everywhere and getting knotted

Replacement 55.5mm Dust Hub Cap Grease Cover for Alko Trailer Drums Pack Size:Single Hub Cap Knuckle head is finished in55. 5mm trailer caravan hub cap. Fits many Alko Brake Drums (1637 and 2151). Fits trailer hubs with a 55. 5mm diameter centre. This 55. 5mm diameter is the internal dimension of the hub. Manufactured from steel for strength and durability. Zinc plated for strength and durability.