Triple block B409083
frictionroller bearingmax. rope ø 14 mm

triple block
triple block
triple block
triple block
triple block
triple block
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Number of sheaves
Bearing type
roller bearing
Maximum line diameter
max. rope ø 14 mm
Application domain
for sailboats
Working load

2,500 kg (5,511.6 lb)


2,340 g (83 oz)


The latest member of our popular ROC Block family is an assortment of extremely strong and durable deck blocks in aluminum. They have the same innovative roller-bearing system as our reliable ROC Blocks, allowing easy line handling and incredibly low friction also under very high loads. Thanks to a unique design these deck blocks permits the line to pass both under and over the top of the sheave, depending on your needs. This makes them very versatile onboard and particularly useful for leading halyards from mast bases over deck houses and coamings into the cockpit. The ROC Deck Blocks are available with one, three or six 80mm sheaves. The versions with three and six sheaves are designed to be fitted with only four bolts each to facilitate the installation and eliminate the number of holes through deck. The single version is fitted with two bolts. These ROC Deck Blocks are made of black hardcoat-anodised aluminum and come with 2-4 high strength acid-proof stainless steel bolts. The bolt type is M12x80 ISO 4017 A4-80.


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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.