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Ronstan

Series 40 BB Block, Single Upright Lead

Ronstan Series 40 BB Block, Single Upright Lead
$51.58 (List Price: $60.68)
15% OFF This Week! You save $9
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Our Part #: RONRF40171 | Mfr. Part #: RF40171
Free Shipping for US Continental orders over $99.

DescriptionImperialMetric
Sheave Ø1 4/7 in.40.00 mm.
Maximum Rope 2/5 in.10.00 mm.
Maximum Working Load771.75 lb.350.00 kg.
Breaking Load2205.00 lb.1000.00 kg.
Weight2.12 oz.60.00 gr.

Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers.Precision moulded Acetal sheaves running on Acetal or TorlonĀ®Ā ball bearings provide high performance & low friction. The 2-stage ball bearing system provides consistent performance over the full load range.

Our Part # RONRF40171 | Ronstan Part # RF40171

Applications:

  • Typically used for halyards at the mast base.