Dimensions of portion of the casting that slides into the mast extrusion:
• Fore-to-aft length: 7-3/8"
• Width: 4-3/8"

Outside dimensions of mast extrusion this masthead is intended to fit:
• Fore and aft: 8"
• Width: 4-3/4"

• Masthead Aluminum Anodized Casting 1ea
• Aluminum Anodized Divider Plate 1ea
• Delrin Bushed Line Sheaves 4ea
• Clevis Pin SS 1/2" X 2-1/8" Grip 5ea
• Clevis Pin SS 3/8" X 2-27/64" Grip 1ea
• Cotter Pin SS 1/8" 6ea

Not for early 70's boats with oval mast and external sail track (used on hulls through at least hull #232).