Sailboat Dinghy Hardware 50mm 2" Double Swivel Shackle Plain Bearing Block Master BP-0503F 50 mm Plain Bearing blocks are typically used for high loads for Halyard tuning, Mainsheet systems, Mast foot blocks, Mast head blocks and boom vangs. •Do not use Master products to human suspension! Specification:Brand: MasterPart Number: BP-0503FSheave Ø (mm) 50 mmSheave Ø (in)2 inLength (mm)101 mmLength (in)4 inWeight (g)125.5 gWeight (oz)4.43 ozMaximum line Ø (mm)10 mmMaximum line Ø (in)3/8 inMaximum working load (kg)522 kgMaximum working load (lb)1148 lbBreaking load (kg)1050 kgBreaking load (lb)2310 lb•Do not use Master products to human suspension! Destination custom duty/tax are not included in the listing price; it is the customer's responsibility to pay for custom duty if any. Shipping by China Post ePacket/Registered Air Mail with shipping tracking number provided. It will take about 3-4 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.