porthole Shackles It has good tensile strength

It has good tensile strength as well as good tear characteristics

and you don’t need to recut your sail

Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers

- Glass lens bonded with reflector to be dust and moisture resistant

porthole Shackles It has good tensile strengthThese heavy duty satin anodized Portholes are CE Classified A1 suitable for use in the hull side. They have a 10mm Smoke Acrylic opening pane set in an aluminium frame. Fitted with friction hinges, permitting them to stay open in any position. Two large diameter knobs ensure that the Portholes can be closed completely watertight. Specifications: External: 344 x 198mm Internal Cut Out: 320 x 174mm Radius 87mm