![Ronstan Wire Block - Tubular Rivet Head w/Nylatron Sheave - 25mm (1") Sheave Diameter [RF418]](https://www.bestmarinebattery.com/wp-content/uploads/2026/08/ronstan-wire-block-tubular-rivet-head-w-nylatron-sheave-25mm-1-sheave-diameter-r.webp)
Description
Wire Block – Tubular Rivet Head w/Nylatron® Sheave – 25mm Sheave Diameter
Wire blocks have purpose designed narrow sheaves and grooves.
Applications:
Wire blocks suit halyards, vang and backstay applications
Materials:
- Grade 316 stainless steel cheeks
- Nylatron® sheave
Specifications:
Sheave Ø: 25mm(1″)
Max. Cable Ø: 3mm(1/8″)
M.W.L:450kg(990lbs)
B.L.: 900kg(1,980lbs)
Weight: 40kg(1.4oz)
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