Ronstan Nylatron Sheave Box - Single Upright Lead Block

Ronstan  |  SKU: 55219

$36.03 USD $37.93
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Description

The Ronstan Nylatron® Sheave Box – Single Upright Lead Block is a compact, low-profile lead block designed for efficient routing of halyards and control lines in dinghies and small sailboats. When mounted in an inverted position, it is frequently used as an upright lead, making it ideal for spar-mounted control systems.

Featuring a Nylatron® sheave for smooth operation and excellent wear resistance, combined with a Grade 316 stainless steel load housing, this sheave box delivers reliable performance in demanding marine environments. The external forming tabs allow the housing to be shaped to match spar profiles before fastening, ensuring a secure and custom fit.

Key Features

  • Low-profile sheave box design

  • Suitable for upright lead applications when inverted

  • External tabs can be formed to match spar profiles

  • Smooth-running, wear-resistant Nylatron® sheave

  • Corrosion-resistant stainless steel construction

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Ronstan

Ronstan Nylatron Sheave Box - Single Upright Lead Block

$36.03 USD $37.93

The Ronstan Nylatron® Sheave Box – Single Upright Lead Block is a compact, low-profile lead block designed for efficient routing of halyards and control lines in dinghies and small sailboats. When mounted in an inverted position, it is frequently used as an upright lead, making it ideal for spar-mounted control systems.

Featuring a Nylatron® sheave for smooth operation and excellent wear resistance, combined with a Grade 316 stainless steel load housing, this sheave box delivers reliable performance in demanding marine environments. The external forming tabs allow the housing to be shaped to match spar profiles before fastening, ensuring a secure and custom fit.

Key Features

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