b"Paluma, Solaris 47, 14.33 m (47'), Solaris Yachts, naval architect: Javier Soto AcebalAndrea Carloni / Solaris YachtsBLACK MAGIC AIR BLOCKSBlack 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: mainsheet, runner, halyard, and spinnaker systems. Offered in 57 - 150 mm sizes, with low-load versions in 57 and 75 mm ranges.High-strength, lightweight Aluminum sheaves and sideplates.CNC sculpted for optimal strength-to-weight.Stands up to sun, salt, and time Sideplates and sheaves Hard Lube-anodized for maximum UV protection and a smooth surface.Dissimilar metals isolated to prevent corrosion.Caged vs. Uncaged RollersLow-friction efficiency for fast trim and release Center cage keeps Torlon roller bearings separated and parallel to reduce friction. Captive Delrin ball bearings carry side loads.50 DO NOT use Harken equipment for human suspension unless product is specifically certified and labeled for such use."