Series 40 All Purpose Block - FiddleFeatures:Exceptionally high working loadsLow maintenance, long service lifeSelf-lubricating sheaveCaptive Lock™ universal headSlotted pin shackle eliminates fouled linesSpare parts - RF41500 Replacement Becket Pin, RF150 ShackleAll purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.Captive Lock™ universal head can be fixed in either of two planes, or free to swivel as required.Applications:MainsheetHalyardVangSpinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8m (26ft)Ideal for fine-tune mainsheet tackles, cunninghams, backstays and other control line purchase systems.Materials:U.V. stabilized Acetal sheavesImpact and U.V. resistant, fibre reinforced Nylon cheeksGrade 316 stainless steel bearing raceGrade 316 stainless steel load strap and head fittingImpact and UV resistant, fiber reinforced Nylon cheeks