- Boat trailer parts
- Boat trailers
- Designed to suit australian conditions
6" Twin Stem - Boat Roller Bracket Galvanized. To suit 6" Boat Rollers. Stem size: 6" x 18mm SQ. Hole size suit 16mm Spindle. Ideal for use with boat trailers, boat trailer parts, rollers, skids, bunks and boating accessories.