Ronstan Series 50 Fiddle Block - RF51530

The Ronstan Series 50 Fiddle Block with Becket and Adjustable Cam Cleat (RF51530) 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. Captive Lock™ universal head can be fixed in either of two planes, or free to swivel as required. Quick adjusting cleat arms require no tools to adjust and fix securely in position.

Features:

• Exceptionally high working loads
• Low maintenance, long service life
• Self-lubricating sheave
• Captive Lock™ universal head
• Slotted pin shackle eliminates fouled lines
• Multi-position cleat arm
• Applications:
  • Mainsheet
  • Halyard
  • Vang
  • Spinnaker control lines on one design classes and sports boats up to (33 ft)
  • Ideal for fine-tune mainsheet tackles, cunninghams, backstays and other control line purchase systems

Specifications:

• Safe working load: 880 lb (400 kg)
• Breaking load: 2200 lb (1000 kg)
• Weight: 5.8 oz (164g)
• Sheave diameter: 1-9/16" and 15/16" (40 mm and 24 mm)
• Maximum line size: 5/16" (8 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