Ronstan Nylatron Sheave Box - Single Upright Lead Block [RF453] Marine Safety | Accessories Shaft Diameter:1"

Shaft Diameter:1"

Ball Bearings: High compression strength carbon black Aceetal

This results in unnecessary double cheeks between each sheave

Operating Temperature: -20°C to +55°C (-4°F to +131°F)

Countdown repeat or Countdown and up options (for elapsed race time)

Ronstan Nylatron Sheave Box - Single Upright Lead Block [RF453] Marine Safety | Accessories Shaft Diameter:1"Nylatron Sheave Box Single Upright Lead Block Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. When mounted in an inverted position, are frequently used as upright leads. Features: The external tabs can be formed to fit the spar profile before fastening Applications: Typically used in dinghy spars for control lines such as outhauls Materials: Nylatron sheave Grade 316 stainless steel