Ronstan Series 40 Ball Bearing Upright Lead Single Block - RF40171

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

Features:

• Typically used for halyards at the mast base

Specifications:

• Type of Block: Upright Lead
• Breaking Load: 2204.6 lbs (1000 kg)
• Maximum Working Load: 771.6 lbs (350 kg)
• Maximum Rope Diameter: 0.39" (10 mm)
• Weight: 2.12 oz (60 g)
• Fastener Diameter: 0.20" (5 mm)
• Materials:
  • Acetal ball bearings
  • UV stabilized Acetal sheave
  • Grade 316 stainless steel load housing