Ronstan All Purpose Series Cheek Block - 40 mm (1 9/16") - RF41151

Ronstan Single, All Purpose (AP) Cheek Blocks are a great all around solution. 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:

• Exceptionally high working loads
• Low maintenance, long service life
• Self-lubricating sheave
• Can be mounted on masts and booms using the curved surface adapter
• Can be stacked to create a double version, but no more than 60% of the rated working load should be applied to the upper sheave
• Applications:
  • Mainsheet
  • Halyard
  • Vang
  • Spinnaker control lines on off-the-beach catamarans, one design classes and sports boats up to 26' (8 m)
• Mounts with 3/16" (3 x 5 mm) fasteners (not included)

Specifications:

• Maximum line size: 3/8" (10 mm)
• Safe working load: 880 lbs (400 kg)
• Sheave diameter: 1 9/16" (40 mm)
• Breaking load: 2,200 lbs (1,000 kg)
• Weight: 2.3 oz (66 g)