CE Smith Trailer Personal Watercraft (PWC) Dolly, 48" x 34" x 19"- Replacement Parts and Accessories for Your Ski Boat, Fishing Boat or Sailboat Trailer 1-1/2" square galvanized steel tubing; Rugged 4" casters Topped with 4' long carpeted bunks that adjust to gently support the vessel Bunk spacing can be set at 12", 16" or 20" 1,000 lb capacity 34"W x 48"L x 19"H