Harken 50 mm Protexit™ Exit Block

When you race HARD, and you rip through as many hoists and douses as we do sailing W-L legs all the time, you should expect to start wearing through the sideplates of your halyard exit block right? Wrong! Thanks to Harken Protexit™ blocks, wear from side angle loading is not inevitable. Protexit’s all-aluminum, wear-resistant housing carefully ushers line in and out no matter the angle. There’s more: Protexit blocks offer higher working loads than any small boat exit blocks we’ve ever made. Protexit aluminum sheaves rotate on sleeve bearings with Delrin® sideload balls so they don’t deform in extreme conditions, while reducing wear on the halyard, too.

Delrin is a registered trademark of E. I. du Pont de Nemours and Company or its affiliates.


  • A (mm) 23.3
  • B (mm) 71.5
  • Breaking load (kg) 1600
  • Fastener spacing (mm) 90
  • Fasteners (mm) 6 FH
  • Length (mm) 117
  • Maximum line Ø (mm) 12
  • Maximum working load (kg) 800
  • Sheave Ø (mm) 50
  • Weight (g) 128

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