Series 30 Block - Single - Loop TopFeatures:Maintenance freeEconomicalLightweight durable constructionStainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenanceHollow rivets in the block heads can be fitted with shackles, which can also be used to add a becket for extra purchaseApplications:Vang, cunningham and trapeze retriever systems on dinghiesLeech line tackles, bunk adjusters etc on larger yachtsMaterials:UV Stabilized Acetal sheaveGrade 316 stainless steel cheeksSpecifications:Sheave Ø:29mm(1-1/8")Max. Rope Ø:8mm(5/16")M.W.L.:300kg(660lbs)B. L.:600kg(1,320lbs)Weight:20g(0.7oz)