Harken Aluminum Stand-Up Block - 57mm Strainers 407 Low-Density filler is a

407 Low-Density filler is a blended microballoon-based filler used to make fairing putties that are easy to sand or carve

Harken recommends equipping every system with Carbo lead blocks for safe furling from the cockpit

Hella (3562 series)

cardboard or plastic

Harken Aluminum Stand-Up Block - 57mm Strainers 407 Low-Density filler is aBlack Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free running, powerful performers are used for sail controls that see lots of action. Sideplates and sheaves Hard Lube anodized for maximum UV protection and a smooth surface. Center cage keeps Torlon roller bearings separated and parallel to reduce friction.