HARKEN Web-On Headboard Plate — Flat Top, 3877 Sailboat Blocks & Hardware_75 mm Aluminum Black Magic Block - Swivel For sails up to 715

For sails up to 715 sq

Because it’s a low-beam design

The toggle heads of the halyard blocks are designed to fit on the studs commonly found at mast bases - check the diameter of the stud against the width of the block jaws and pin diameter

The fixed tack terminal option is used when the torsion cable is inside the luff

HARKEN Web-On Headboard Plate — Flat Top, 3877 Sailboat Blocks & Hardware_75 mm Aluminum Black Magic Block - Swivel For sails up to 715Aluminum web on headboard plates are easy for sailmakers to install. Plates have radiused edges to protect the sail and fit 1 in (25 mm) webbing strap. Holes threaded into plates accept 416 cheek blocks for the leech line. Web on plates are required for the 3867 System C CB headboard car. Contact Harken for headboard plates for older systems. Sold separately. Battcar switch systems cut sail stack height in half by automatically splitting cars into two