b'29 mm Blocks 341 342 343About Carbo Air blocks: see feature page at beginning of this section.340 344 Doubles and triples feature U-Locks to hold the swivel in front/side position, or to let it spin freely. 345348346 34730 mm349 (1 3/16") 381 352371Use as becket block without the additional height of a becket.35032 mm(1 1/4")353 High-strength pivoting lead blocks with cams are used for halyard 395 396 controls on larger keelboats and as headknockers on dinghies and beachcats for sheeting directly from the boom. Hole spacing and rivet size are the same as Classic models, making upgrades easy. Cam reverses for either up or down cleating. Sheave Shackle pin Max line Maximum BreakingPartLength Weight working load loadNo. Description in mm in mm oz g in mm in mm lb kg lb kg 340Single/swivel292 5/866.9265/3245/1683301501000454 1 1/8341Single/swivel/becket1 1/8293 1/16781285/3245/1683301501000454 342Double/swivel1 1/8292 7/8731.8513/1655/1686602991625737343Double/swivel/becket293 3/8851.9543/1655/1686602991625737 1 1/8 3441 1/8292 7/8732.6743/165/1689904492000907 Triple/swivel5 345Triple/swivel/becket1 1/8293 3/8852.7773/1655/169904492000907 8 346Triple/471 Carbo-Cam**1 1/8292 7/8734.61303/1651/467503401500680347Triple/471 Carbo-Cam/becket**1 1/829854.71333/1651/469004081800816 3 3/8 348Single/ 1 1/8291 15/1649.8235/163301501000454xed*8xed* 349Stand-up/ 1 1/8292 3/16561.1315/1683301501000454 350Cheek1 1/8292 1/853.6175/1683301501000454352901 1/8292 1/1652.9265/1683301501000454xed head* 353Traveler1 1/829921.2345/1683301501000454 3 5/8371Clew block assembly1 1/8294 7/81241.8515/1683301501000454 381Double/ 1 1/8292 1/8541.2345/1686602991625737xed 395Pivoting lead block/468 Cam-Matic**1 1/8293 15/161003.290.71/4620091650295396Pivoting lead block/471 Carbo-Cam**1 1/8293 15/161002.9683.71/4615068650295*Can be used as becket block. **Maximum working loads and breaking loads for blocks based on cam strengths.19'