Series 40 All Purpose Block - Single - Stand UpAll 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.Features:Exceptionally high working loadsLow maintenance, long service lifeSelf-lubricating sheaveCaptive Lock™ universal headMount with 2 x 5mm (3/16") fasteners (not supplied)Applications:MainsheetHalyardVangSpinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8M(26')Materials:U.V. stabilized Acetal sheavesImpact and U.V. resistant, fiber reinforced Nylon cheeksGrade 316 stainless steel bearing raceGrade 316 stainless steel load strap and head fittingSpecifications:Sheave Ø: 40mm(1-9/16")Max. Rope Ø: 10mm(7/16")M.W.L.: 400kg(880lbs)B. L.: 800kg(1,760lbs)Weight: 72g(2.5oz)