Sailboat Hardware 57 mm 2 1/4 Inch Aluminum Single Becket Block 2313 Features: Aluminum material with high strength,delicacy appearance, longer block life. Preservative treatment Delrin balls Stainless steel accessories. Use for: Mainsheet fine-tune Main/jib sheets Control lines Vangs Outhauls Specification: Brand : Blue Shark Part Number : 2313 Single Becket Block Head can be fixed at 0 or 90,or left free to swivel 360 Sheave: 2 1/4 inch, 57mm Weight: 6.35 oz,180g Max Line: 7/16 inch, 12mm Shackle: 1/4 inch,6mm Maximum Working Load: 1102lb,500kg Breaking Load: 3527lb,1600kg Destination custom duty is not included in the listing price; it is the customer's responsibility to pay for custom duty if any. Shipping by China Post Registered Air Mail with shipping tracking number provided. It will take about 2-3 weeks’ time to deliver to you after shipping out, some countries may take longer time to deliver. If you want faster delivery, please contact me for shipping upgrade.