Ronstan Series 20 Block - 20 mm (3/4") - RF20111

The Ronstan 20 mm Series 20 Block with Becket and Loop Head (RF21111) is a great all-purpose block. The self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.

Features:

• Low maintenance, long service life
• Self-lubricating sheave
• Applications:
  • Dinghy control lines
  • Dinghy vangs
  • Cunninghams
  • Traveler controls

Specifications:

• Safe working load: 550 lbs (250 kg)
• Breaking load: 1210 lbs (550 kg)
• Weight: 0.6 oz. (18 g)
• Sheave diameter: 3/4" (20 mm)
• Maximum line size: 1/4" (6 mm)
• Materials:
  • U.V. stabilized Acetal sheaves
  • Grade 316 stainless steel bearing race
  • Grade 316 stainless steel load strap and head fitting
  • Impact and UV resistant, fiber reinforced nylon cheeks