Skip to product information
1 of 1


Ronstan Series 50 All Purpose Block - Double [RF51200]

Ronstan Series 50 All Purpose Block - Double [RF51200]

Regular price $71.27 USD
Regular price Sale price $71.27 USD
Sold out

Series 50 All Purpose Block - Double

All purpose (AP) 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. Swivel shackle head for full 360 degree rotation (non-locking).


  • Exceptionally high working loads
  • Low maintenance & long service life
  • Self-lubricating Acetal polymer sheave ensures low friction and extreme durability
  • Slotted pin shackle eliminates fouled lines


  • Mainsheet and halyard applications, vang and spinnaker control lines on boats to (33ft). 10m
  • S60 - on boats up to 40ft, (12m)


  • Grade 316 stainless steel load strap
  • Impact and UV resistant, fiber reinforced Nylon cheeks


  • Sheave Diameter: (inch) 2" / (mm) 50
  • Max Rope Diameter: (inch) 1/2" / (mm) 12
  • Pin Diameter: (inch) 1/4" / (mm) 6
  • Maximum Working Load: (lb) 2200 / (kg) 1000
  • Breaking Load: (lb) 4410 / (kg) 2000
  • Weight: (oz) 9.0 / (g) 255
View full details