Excel Pro Polyester 2mm String, Marlow. It is robust and pleasant to handle and suitable for dinghies and small maneuvers for sailboats. -- Excel Pro Polyester 2mm String, Marlow. It is robust and pleasant to handle and suitable for dinghies and small maneuvers for sailboats. It is recommended for: Halyard and sheet for dinghies Spinnaker pole and boom downhaul Barber Hauler Threading Trolley control String diameter: 2 mm Average breaking load: 97 kg Net weight: 2.8 g/m Color: assorted Identification: Colored borders Packaging: 30 meter reel Core material: Twisted Polyester Sheath material: 16 polyester plait