- Boat trailer parts
- Boat trailers
- Designed to suit australian conditions
4 Inch Boat Roller Spindle 4 Inch Boat Roller Spindle. Suitable for rollers 4 Inches. Bow Rollers, Cotton Reel, Dog Bone. Zinc plated spindles 145mm x 16mm Suits 4" Roller and Bracket. Ideal for use with boat trailers, boat trailer parts, rollers, skids, bunks and boating accessories.