Series 30 Block - Single - Loop TopFeatures: Maintenance free; Economical; Lightweight durable construction; Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance; Hollow rivets in the block heads can be fitted with shackles, which can also be used to add a becket for extra purchase; Applications: Vang, cunningham and trapeze retriever systems on dinghies; Leech line tackles, bunk adjusters etc on larger yachts; Materials: UV Stabilized Acetal sheave; Grade 316 stainless steel cheeks; Specifications:Sheave A~:29mm(1-1/8")Max. Rope A~:8mm(5/16")M.W.L.:300kg(660lbs)B. L.:600kg(1,320lbs)Weight:20g(0.7oz) - cis2:mm5mnJlm -