Ronstan Series 40 Block - 40 mm (1 9/16") - RF41111

The Ronstan 40 mm Series 40 Block with Becket and Loop Head (RF41111) 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
• Slotted pin shackle eliminates fouled lines
• Applications:
  • Mainsheet
  • Halyard
  • Vang
  • Mainsheet and halyard applications, vang and spinnaker control lines on boats to 8 m (26 ft.)
  • Ideal for fine-tune mainsheet tackles, cunninghams, backstays and other control line purchase systems

Specifications:

• Safe working load: 880 lbs (400 kg)
• Breaking load: 2200 lbs (1000 kg)
• Weight: 2.2 oz. (61 g)
• Sheave diameter: 1 9/16" (40 mm)
• Maximum line size: 7/16" (11 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