b"Air Runner BlocksRunners are used on running backstays of offshore boats to adjust mast bend for different wind conditions. Integrated sideplate bails and recessed cotter key help produce a smooth design that wont snag lifelines. Foam padded Block Socks easily install over Air Runner blocks to protect your blocks, deck, and crew.About Black Magic Air blocks: see feature pages at beginning of this section.3224 32393238 3252 30353251 3260 3036 Sideload bearing strips dampen 3259 3265 3037 rig vibration.3264 30383396Block SocksBlock SocksPart No. Fits3035 3224/3238/32393036 3251/32523037 3259/3260Runner Blocks 3038 3264/3265Sheave Clevis pin Max line Maximum BreakingPartLength Weight working load loadNo. Description in mm in mm oz g in mm in mm lb kg lb kg45 mm 82 3396Single 1 3/4452 13/16712.895/1683/8101653 750 3306 150057 mmSingle2 1/4573 3/8864.421253/81/212250050002268 3224101134 75 mm2 15/162268 3238Single754 5/811810.162881/212.79/16145000100004536 2268 3239Single/becket2 15/16755 3/414611.23181/212.79/16145000100004536 100 mm32513 15/161006 3/161571748115.95/875003402150006804 Single5/816 3252Single/becket3 15/161007 9/1619319.125425/815.95/8167500 3402150006804 125 mm3259Single4 15/161257 11/1619529.768443/43/419110004990220009979 19 Single/becket4 15/1612524033.52950193/419110004990220009979 32609 1/23/4 150 mm3264Single1508 3/422150.6414363/41912515000680430000 5 15/1613608 3/41930000 3265Single/becket5 15/1615010 13/1627556.72160812515000680413608 Crossover BlocksCrossover blocks provide a cleaner, more efficient deck. These easy-to-install blocks mount behind the stopper bank on each side of the cabin house and can route any line to the winch on the opposite side. Blocks feature built-in risers and sculpted backing1984plates. The large, strong bases protect 1981cored decks. Use the 1984 for boats to 11.5 m (38') and the 1981 for boats to 15 m (48').Sheave Base Max line Maximum BreakingPart Height Weightworking load loadNo. Description in mm in mm in mm oz g in mm lb kg lb kg1981Crossover2 3/16562 5/86687/16123000136160002722 1 7/1636227 32 1984Crossover1 3/4442 1/16521 1/44.21193/810200090740001814 Fastener included. 57"