RF34108HLK%3A%26nbsp%3BSeries%2030%20Ball%20Bearing%20ILCA%26reg%3B%20Top%20Vang%20BlockHigh%20load%20stainless%20steel%20single%20sheave%20block%20with%20vang%20key.%0D%0AFEATURES%0D%0A%0D%0ALowest%20friction%20top%20vang%20block%20available.%0D%0ANarrow%20and%20compact%20design.%0D%0ARF34108HLK%20includes%20vang%20key.%0D%0A%0D%0ASPECIFICATIONS%0D%0A%0D%0AB.L.%20(kg)%20800%0D%0AM.W.L.%20(kg)%20400%0D%0AMax.%20Rope%20diameter%20(mm)%206%0D%0AWeight%20(g)%2050%0D%0APin%20%26Oslash%3B%20(mm)%205%0D%0ASheave%20Material%20Grade%20316%20St%2FSt%0D%0APerformance%20Level%20Performance%20Racing%0D%0A%0D%0AAPPLICATIONS%0D%0A%0D%0AILCA%26reg%3B%26nbsp%3BTop%20Vang%0D%0A%0D%0AMATERIALS%0D%0A%0D%0AHHL%20sheave%20and%20bearing%20race%3A%20Grade%202205%20stainless%20steel.%0D%0ABall%20bearings%3A%20Grade%20304%20stainless%20steel.%0D%0ACheeks%2FFrame%3A%20Grade%20316%20stainless%20steel%2C%20hard%20wearing%20PTFE%20black%20coating.%0D%0AVang%20Key%20(RF1062)%3A%20Grade%20316%20stainless%20steel.%0D%0A%0D%0APRODUCT%20INFFORMATION%0D%0AVANG%20UNITSRonstan%26rsquo%3Bs%20ILCA%26reg%3B%20lower%20vang%20unit%20is%20the%20new%20benchmark%20in%20design%20and%26nbsp%3Bperformance.%20Thoroughly%20tested%20on%20the%20water%20by%20leading%20ILCA%26reg%3B%20sailors%2C%26nbsp%3Bthe%20vang%20unit%20features%20optimised%20geometry%20to%20minimise%20line%20chafe%20and%26nbsp%3Bfriction%20which%20provides%20a%20purchase%20advantage%2C%20and%20easy%20cleating%20and%26nbsp%3Breleasing%20to%20stay%20in%20full%20control%20when%20playing%20the%20vang%20from%20any%20anglewhile%20inboard%20or%20hiking.%20The%20primary%20purchase%20sheave%20features%20Ronstan%26rsquo%3Bs%26nbsp%3Bhigh%20load%2C%20low%20friction%2C%20stainless%20steel%20HHL%20sheave.%20Geometry%20of%20the%20cleat%26nbsp%3Barm%20pivot%20point%20is%20close%20to%20the%20clevis%20pin%20attachment%20to%20minimise%20stress%20on%26nbsp%3Bthe%20mast%20attachment%20point.%0D%0AThe%20RF34108HL%20is%20a%20purpose%20designed%20ILCA%26reg%3B%20top%20vang%20block.%0D%0AThe%20top%20vang%20block%20cheeks%20are%20made%20of%20grade%20316%20stainless%20steel%20with%20a%20hard%20wearing%20PTFE%20black%20coating.%0D%0AHigh%20load%20blocks%20are%20designed%20specifically%20for%20any%20application%20where%20high%20dynamic%20or%20static%20loads%20are%20expected.%20They%20feature%20a%20high%20strength%20grade%202205%20stainless%20steel%20sheave%20%26amp%3B%20hub%20together%20with%20a%20triple%20bearing%20race%20to%20maintain%20low%20friction%20at%20very%20high%20loads.