Allen 40mm Single Block with Swivel Head & AL-0077 Cleat Select (See Table Below):AL-20401-77 40mm Single Block with Swivel Head & AL-0077 Cleat - EACH The unit is fitted close

The unit is fitted close to the mast base to accept halyards

asp for more information

ISO 15027-1 compliant

The SAS Extension tubes are designed to fit the HD range on wheel clamp and on steel wheels where the rims are dished

2 US GPM) Material Materials in Contact with Liquid: Glass-filled polypropylene

Allen 40mm Single Block with Swivel Head & AL-0077 Cleat Select (See Table Below):AL-20401-77 40mm Single Block with Swivel Head & AL-0077 Cleat - EACH The unit is fitted close40mm Single Block with Swivel Head & AL 0077 Cleat Made from high strength, lightweight glass loaded nylon and featuring Allens dynamic bearing technology for a high performance block suitable for keelboats and dinghies. 40mm dynamic blocks are perfect for use on main, jib and spinnaker sheets on dinghies and keelboat control lines. Bearings Dynamic blocks feature Allen's patented bearing system which uses twin rows of stainless steel ball bearings